diff --git a/src/components/Roof2.jsx b/src/components/Roof2.jsx
index 108303b3..eba3000e 100644
--- a/src/components/Roof2.jsx
+++ b/src/components/Roof2.jsx
@@ -7,11 +7,11 @@ import QPolygon from '@/components/fabric/QPolygon'
 
 import RangeSlider from './ui/RangeSlider'
 import { useRecoilState, useRecoilValue } from 'recoil'
-import { canvasSizeState, fontSizeState, sortedPolygonArray } from '@/store/canvasAtom'
+import { canvasListState, canvasSizeState, fontSizeState, sortedPolygonArray } from '@/store/canvasAtom'
 import { QLine } from '@/components/fabric/QLine'
 
 export default function Roof2() {
-  const { canvas, handleRedo, handleUndo, setCanvasBackgroundWithDots, saveImage } = useCanvas('canvas')
+  const { canvas, handleRedo, handleUndo, setCanvasBackgroundWithDots, saveImage, addCanvas, changeCanvas } = useCanvas('canvas')
 
   //canvas 기본 사이즈
   const [canvasSize, setCanvasSize] = useRecoilState(canvasSizeState)
@@ -29,6 +29,9 @@ export default function Roof2() {
 
   const [showControl, setShowControl] = useState(false)
 
+  const [canvasIdx, setCanvasIdx] = useState(0)
+  const canvasList = useRecoilValue(canvasListState)
+
   const { mode, changeMode, handleClear, fillCellInPolygon, zoomIn, zoomOut, zoom, togglePolygonLine, handleOuterlinesTest2, applyTemplateB } =
     useMode()
 
@@ -180,6 +183,8 @@ export default function Roof2() {
 
       canvas?.add(polygon)
 
+      console.log(polygon)
+
       handleOuterlinesTest2(polygon)
 
       // const lines = togglePolygonLine(polygon)
@@ -200,17 +205,19 @@ export default function Roof2() {
 
   const makeQLine = () => {
     if (canvas) {
-      const line = new QLine(
-        [50, 50, 200, 50],
+      const line = new fabric.QLine(
+        [200, 200, 500, 500],
         {
           stroke: 'black',
           strokeWidth: 1,
           fontSize: fontSize,
+          selectable: true,
         },
         50,
       )
 
       canvas?.add(line)
+      console.log(line)
     }
   }
 
@@ -240,6 +247,12 @@ export default function Roof2() {
     setShowControl(!showControl)
   }
 
+  const nextCanvas = () => {
+    const nextCanvasNumber = canvasIdx < canvasList.length - 1 ? canvasIdx + 1 : 0
+    setCanvasIdx(nextCanvasNumber)
+    changeCanvas(nextCanvasNumber)
+  }
+
   return (
     <>
       {canvas && (
@@ -333,6 +346,12 @@ export default function Roof2() {
             <Button className="m-1 p-2" onClick={PolygonToLine}>
               PolygonToLine
             </Button>
+            <Button className="m-1 p-2" onClick={addCanvas}>
+              캔버스 추가
+            </Button>
+            <Button className="m-1 p-2" onClick={nextCanvas}>
+              다음 캔버스
+            </Button>
             <Button className="m-1 p-2" color={`${showControl ? 'primary' : 'default'}`} onClick={handleShowController}>
               canvas 컨트롤러 {`${showControl ? '숨기기' : '보이기'}`}
             </Button>
diff --git a/src/components/fabric/QLine.js b/src/components/fabric/QLine.js
index 7796e66e..6a3ce67c 100644
--- a/src/components/fabric/QLine.js
+++ b/src/components/fabric/QLine.js
@@ -16,7 +16,7 @@ export class QLine extends fabric.Group {
   isAlreadyInterSection = false
 
   interSectionPoints = []
-  #lengthTxt = 0
+  lengthTxt = 0
 
   constructor(points, option = { isActiveLengthText: true }, lengthTxt) {
     // 소수점 전부 제거
@@ -44,24 +44,24 @@ export class QLine extends fabric.Group {
     this.idx = option.idx
 
     if (lengthTxt > 0) {
-      this.#lengthTxt = Number(lengthTxt)
+      this.lengthTxt = Number(lengthTxt)
     }
 
-    option.isActiveLengthText ?? this.#init()
-    this.#addControl()
+    option.isActiveLengthText ?? this.init()
+    this.addControl()
   }
 
-  #init() {
-    this.#addLengthText(true)
+  init() {
+    this.addLengthText(true)
   }
 
-  #addControl() {
+  addControl() {
     this.on('moving', () => {
-      this.#addLengthText(false)
+      this.addLengthText(false)
     })
 
     this.on('modified', (e) => {
-      this.#addLengthText(false)
+      this.addLengthText(false)
     })
 
     this.on('selected', () => {
@@ -73,19 +73,19 @@ export class QLine extends fabric.Group {
     })
   }
 
-  #addLengthText(isFirst) {
+  addLengthText(isFirst) {
     if (this.text) {
       this.removeWithUpdate(this.text)
       this.text = null
     }
 
-    if (isFirst && this.#lengthTxt > 0) {
-      const text = new fabric.Textbox(this.#lengthTxt.toFixed(0).toString(), {
+    if (isFirst && this.lengthTxt > 0) {
+      const text = new fabric.Textbox(this.lengthTxt.toFixed(0).toString(), {
         left: (this.x1 + this.x2) / 2,
         top: (this.y1 + this.y2) / 2,
         fontSize: this.fontSize,
       })
-      this.length = this.#lengthTxt
+      this.length = this.lengthTxt
       this.text = text
       this.addWithUpdate(text)
       return
@@ -115,4 +115,37 @@ export class QLine extends fabric.Group {
     this.text.set({ fontSize })
     this.addWithUpdate()
   }
+
+  fromObject(object, callback) {
+    fabric.util.enlivenObjects(object.objects, function (enlivenedObjects) {
+      delete object.objects
+      callback && callback(new fabric.Frindle(enlivenedObjects, object))
+    })
+  }
+
+  async = true
+
+  toObject(propertiesToInclude) {
+    return fabric.util.object.extend(this.callSuper('toObject'), {
+      length: this.length,
+      line: this.line,
+      text: this.text,
+      fontSize: this.fontSize,
+      x1: this.x1,
+      y1: this.y1,
+      x2: this.x2,
+      y2: this.y2,
+      direction: this.direction,
+      idx: this.idx,
+      type: this.type,
+      parent: this.parent,
+      isAlreadyInterSection: this.isAlreadyInterSection,
+      interSectionPoints: this.interSectionPoints,
+      lengthTxt: this.lengthTxt,
+      setFontSize: this.setFontSize,
+      addLengthText: this.addLengthText,
+      init: this.init,
+      addControl: this.addControl,
+    })
+  }
 }
diff --git a/src/components/fabric/QPolygon.js b/src/components/fabric/QPolygon.js
index f7bc2509..75e62a19 100644
--- a/src/components/fabric/QPolygon.js
+++ b/src/components/fabric/QPolygon.js
@@ -28,6 +28,7 @@ export default class QPolygon extends fabric.Group {
   helpLines = []
 
   wall
+
   constructor(points, options, canvas) {
     /*if (points.length !== 4 && points.length !== 6) {
       throw new Error('Points must be 4 or 6.')
@@ -51,13 +52,13 @@ export default class QPolygon extends fabric.Group {
     this.points = sortPoints
     this.polygon = polygon
     this.name = options.name
-    this.#init()
-    this.#addEvent()
-    this.#initLines()
+    this.init()
+    this.addEvent()
+    this.initLines()
     this.setShape()
   }
 
-  #initLines() {
+  initLines() {
     this.points.forEach((point, i) => {
       const nextPoint = this.points[(i + 1) % this.points.length]
       const line = new QLine([point.x, point.y, nextPoint.x, nextPoint.y], {
@@ -71,13 +72,13 @@ export default class QPolygon extends fabric.Group {
     })
   }
 
-  #init() {
-    this.#addLengthText()
+  init() {
+    this.addLengthText()
   }
 
-  #addEvent() {
+  addEvent() {
     this.on('scaling', (e) => {
-      this.#updateLengthText()
+      this.updateLengthText()
     })
 
     this.on('selected', function () {
@@ -110,7 +111,7 @@ export default class QPolygon extends fabric.Group {
     this.addWithUpdate()
   }
 
-  #addLengthText() {
+  addLengthText() {
     if (this.texts.length > 0) {
       this.texts.forEach((text) => {
         this.canvas.remove(text)
@@ -142,7 +143,7 @@ export default class QPolygon extends fabric.Group {
     this.canvas.renderAll()
   }
 
-  #updateLengthText() {
+  updateLengthText() {
     const points = this.getCurrentPoints()
 
     points.forEach((start, i) => {
@@ -188,7 +189,7 @@ export default class QPolygon extends fabric.Group {
           new fabric.Point(rect.left + rect.width, rect.top + rect.height),
         ]
 
-        const isInside = rectPoints.every((rectPoint) => this.inPolygon(rectPoint) && this.#distanceFromEdge(rectPoint) >= cell.padding)
+        const isInside = rectPoints.every((rectPoint) => this.inPolygon(rectPoint) && this.distanceFromEdge(rectPoint) >= cell.padding)
 
         if (isInside) {
           this.addWithUpdate(rect)
@@ -245,7 +246,7 @@ export default class QPolygon extends fabric.Group {
     return intersects % 2 === 1
   }
 
-  #distanceFromEdge(point) {
+  distanceFromEdge(point) {
     const vertices = this.getCurrentPoints()
     let minDistance = Infinity
 
@@ -317,13 +318,13 @@ export default class QPolygon extends fabric.Group {
     }
 
     if (this.lines.length === 4) {
-      this.#drawHelpLineInRect(chon)
+      this.drawHelpLineInRect(chon)
     } else if (this.lines.length === 6 || this.lines.length === 8) {
       // TODO : 6각형
-      this.#drawHelpLineInHexagon2(chon)
+      this.drawHelpLineInHexagon2(chon)
     } /* else if (this.lines.length === 8) {
       // TODO : 8각형
-      this.#drawHelpLineInOctagon(chon)
+      this.drawHelpLineInOctagon(chon)
     }*/
   }
 
@@ -370,7 +371,7 @@ export default class QPolygon extends fabric.Group {
     return this.shape
   }
 
-  #drawHelpLineInRect(chon) {
+  drawHelpLineInRect(chon) {
     let type = 1
     let smallestLength = Infinity
     let maxLength = 0
@@ -526,7 +527,7 @@ export default class QPolygon extends fabric.Group {
       this.canvas.add(ridge)
     }
   }
-  #drawHelpLineInHexagon2(chon) {
+  drawHelpLineInHexagon2(chon) {
     const oneSideLines = [...this.lines].map((line) => {
       let newX1, newY1, newX2, newY2
       if (line.direction === 'top') {
@@ -742,7 +743,7 @@ export default class QPolygon extends fabric.Group {
       this.canvas.renderAll()
     })
   }
-  #drawHelpLineInHexagon(chon) {
+  drawHelpLineInHexagon(chon) {
     const historyLines = []
     const helpPoints = []
     const notInterSectionLines = []
@@ -884,5 +885,9 @@ export default class QPolygon extends fabric.Group {
     this.canvas.renderAll()
   }
 
-  #drawHelpLineInOctagon(chon) {}
+  drawHelpLineInOctagon(chon) {}
+
+  getObject() {
+    return this
+  }
 }
diff --git a/src/hooks/useCanvas.js b/src/hooks/useCanvas.js
index 5f44060a..54e9609d 100644
--- a/src/hooks/useCanvas.js
+++ b/src/hooks/useCanvas.js
@@ -1,13 +1,9 @@
 import { useEffect, useRef, useState } from 'react'
 import { fabric } from 'fabric'
-import {
-  actionHandler,
-  anchorWrapper,
-  polygonPositionHandler,
-} from '@/util/canvas-util'
+import { actionHandler, anchorWrapper, getDirectionByPoint, polygonPositionHandler, sortedPoints } from '@/util/canvas-util'
 
 import { useRecoilState } from 'recoil'
-import { canvasSizeState, fontSizeState } from '@/store/canvasAtom'
+import { canvasListState, canvasSizeState, fontSizeState } from '@/store/canvasAtom'
 import QPolygon from '@/components/fabric/QPolygon'
 import { QLine } from '@/components/fabric/QLine'
 import QRect from '@/components/fabric/QRect'
@@ -20,6 +16,8 @@ export function useCanvas(id) {
   const [fontSize] = useRecoilState(fontSizeState)
   const points = useRef([])
 
+  const [canvasList, setCanvasList] = useRecoilState(canvasListState)
+
   /**
    * 처음 셋팅
    */
@@ -31,17 +29,6 @@ export function useCanvas(id) {
       selection: false,
     })
 
-    // settings for all canvas in the app
-    fabric.Object.prototype.transparentCorners = false
-    fabric.Object.prototype.cornerColor = '#2BEBC8'
-    fabric.Object.prototype.cornerStyle = 'rect'
-    fabric.Object.prototype.cornerStrokeColor = '#2BEBC8'
-    fabric.Object.prototype.cornerSize = 6
-
-    QPolygon.prototype.canvas = c
-    QLine.prototype.canvas = c
-    QRect.prototype.canvas = c
-
     setCanvas(c)
     return () => {
       c.dispose()
@@ -57,24 +44,14 @@ export function useCanvas(id) {
   useEffect(() => {
     canvas
       ?.getObjects()
-      .filter(
-        (obj) =>
-          obj.type === 'textbox' ||
-          obj.type === 'text' ||
-          obj.type === 'i-text',
-      )
+      .filter((obj) => obj.type === 'textbox' || obj.type === 'text' || obj.type === 'i-text')
       .forEach((obj) => {
         obj.set({ fontSize: fontSize })
       })
 
     canvas
       ?.getObjects()
-      .filter(
-        (obj) =>
-          obj.type === 'QLine' ||
-          obj.type === 'QPolygon' ||
-          obj.type === 'QRect',
-      )
+      .filter((obj) => obj.type === 'QLine' || obj.type === 'QPolygon' || obj.type === 'QRect')
       .forEach((obj) => {
         obj.setFontSize(fontSize)
       })
@@ -121,26 +98,26 @@ export function useCanvas(id) {
    */
   const removeMouseLines = () => {
     if (canvas?._objects.length > 0) {
-      const mouseLines = canvas?._objects.filter(
-        (obj) => obj.name === 'mouseLine',
-      )
+      const mouseLines = canvas?._objects.filter((obj) => obj.name === 'mouseLine')
       mouseLines.forEach((item) => canvas?.remove(item))
     }
     canvas?.renderAll()
   }
 
-  /**
-   * 눈금 그리기
-   */
   const initialize = () => {
     canvas?.clear()
+    // settings for all canvas in the app
+    fabric.Object.prototype.transparentCorners = false
+    fabric.Object.prototype.cornerColor = '#2BEBC8'
+    fabric.Object.prototype.cornerStyle = 'rect'
+    fabric.Object.prototype.cornerStrokeColor = '#2BEBC8'
+    fabric.Object.prototype.cornerSize = 6
 
-    // 기존 이벤트가 있을 경우 제거한다.
-    // removeEventOnCanvas()
+    QPolygon.prototype.canvas = canvas
+    QLine.prototype.canvas = canvas
+    QRect.prototype.canvas = canvas
 
-    // 작업 후에 event를 추가해준다.
-
-    // addEventOnCanvas()
+    fabric.QLine = QLine
   }
 
   /**
@@ -176,26 +153,20 @@ export function useCanvas(id) {
     }
 
     // 가로선을 그립니다.
-    const horizontalLine = new fabric.Line(
-      [0, pointer.y, canvasSize.horizontal, pointer.y],
-      {
-        stroke: 'black',
-        strokeWidth: 1,
-        selectable: false,
-        name: 'mouseLine',
-      },
-    )
+    const horizontalLine = new fabric.Line([0, pointer.y, canvasSize.horizontal, pointer.y], {
+      stroke: 'black',
+      strokeWidth: 1,
+      selectable: false,
+      name: 'mouseLine',
+    })
 
     // 세로선을 그립니다.
-    const verticalLine = new fabric.Line(
-      [pointer.x, 0, pointer.x, canvasSize.vertical],
-      {
-        stroke: 'black',
-        strokeWidth: 1,
-        selectable: false,
-        name: 'mouseLine',
-      },
-    )
+    const verticalLine = new fabric.Line([pointer.x, 0, pointer.x, canvasSize.vertical], {
+      stroke: 'black',
+      strokeWidth: 1,
+      selectable: false,
+      name: 'mouseLine',
+    })
 
     // 선들을 캔버스에 추가합니다.
     canvas?.add(horizontalLine, verticalLine)
@@ -325,7 +296,6 @@ export function useCanvas(id) {
     }
     const jsonStr = JSON.stringify(canvas)
     localStorage.setItem('canvas', jsonStr)
-    handleClear()
   }
 
   /**
@@ -479,10 +449,7 @@ export function useCanvas(id) {
     poly.controls = poly.points.reduce(function (acc, point, index) {
       acc['p' + index] = new fabric.Control({
         positionHandler: polygonPositionHandler,
-        actionHandler: anchorWrapper(
-          index > 0 ? index - 1 : lastControl,
-          actionHandler,
-        ),
+        actionHandler: anchorWrapper(index > 0 ? index - 1 : lastControl, actionHandler),
         actionName: 'modifyPolygon',
         pointIndex: index,
       })
@@ -571,6 +538,33 @@ export function useCanvas(id) {
     })
   }
 
+  const addCanvas = () => {
+    const canvasState = canvas?.getObjects()
+
+    canvasState.forEach((state) => {
+      console.log(state)
+    })
+
+    const str = JSON.stringify(canvasState)
+
+    canvas?.clear()
+
+    JSON.parse(str).forEach((state) => {
+      canvas?.add(state)
+    })
+
+    /*const stateArr = canvasState.map((state) => state.getObject().getObjects())
+
+    const newCanvasList = [...canvasList, JSON.stringify(stateArr)]
+
+    setCanvasList(newCanvasList)*/
+  }
+
+  const changeCanvas = (idx) => {
+    canvas?.clear()
+    const canvasState = JSON.parse(canvasList[idx])
+  }
+
   return {
     canvas,
     addShape,
@@ -585,5 +579,7 @@ export function useCanvas(id) {
     saveImage,
     handleFlip,
     setCanvasBackgroundWithDots,
+    addCanvas,
+    changeCanvas,
   }
 }
diff --git a/src/hooks/useMode.js b/src/hooks/useMode.js
index d1a60e04..c22e9c7b 100644
--- a/src/hooks/useMode.js
+++ b/src/hooks/useMode.js
@@ -718,8 +718,6 @@ export function useMode() {
   const handleOuterlinesTest = (polygon, offset = 71) => {
     var offsetPoints = []
 
-    debugger
-
     const sortedIndex = getStartIndex(polygon.lines)
     let tmpArraySorted = rearrangeArray(polygon.lines, sortedIndex)
 
diff --git a/src/store/canvasAtom.js b/src/store/canvasAtom.js
index 7d1d63fc..5a3c3d31 100644
--- a/src/store/canvasAtom.js
+++ b/src/store/canvasAtom.js
@@ -35,3 +35,9 @@ export const wallState = atom({
   default: {},
   dangerouslyAllowMutability: true,
 })
+
+export const canvasListState = atom({
+  key: 'canvas',
+  default: [],
+  dangerouslyAllowMutability: true,
+})