diff --git a/src/hooks/common/useCommonUtils.js b/src/hooks/common/useCommonUtils.js
index b70ae0c8..f151f953 100644
--- a/src/hooks/common/useCommonUtils.js
+++ b/src/hooks/common/useCommonUtils.js
@@ -757,6 +757,14 @@ export function useCommonUtils() {
     })
   }
 
+  const deleteOuterLineObject = () => {
+    const selectedOuterLine = canvas.getActiveObject()
+    if (selectedOuterLine && selectedOuterLine.name === 'outerLine') {
+      canvas.remove(selectedOuterLine)
+      canvas.renderAll()
+    }
+  }
+
   return {
     commonFunctions,
     dimensionSettings,
@@ -767,5 +775,6 @@ export function useCommonUtils() {
     copyObject,
     editText,
     changeDimensionExtendLine,
+    deleteOuterLineObject,
   }
 }
diff --git a/src/hooks/roofcover/useAuxiliaryDrawing.js b/src/hooks/roofcover/useAuxiliaryDrawing.js
index 39294260..ba631080 100644
--- a/src/hooks/roofcover/useAuxiliaryDrawing.js
+++ b/src/hooks/roofcover/useAuxiliaryDrawing.js
@@ -561,17 +561,62 @@ export function useAuxiliaryDrawing(id) {
     }
 
     const roofBases = canvas.getObjects().filter((obj) => obj.name === 'roofBase')
-
-    const allLines = [...auxiliaryLines]
+    /*const allLines = [...auxiliaryLines]
 
     roofBases.forEach((roofBase) => {
-      roofBase.lines.forEach((line) => {
-        allLines.push(line)
-      })
+      allLines.push(...roofBase.lines)
+    })*/
+
+    const innerLines = [...auxiliaryLines]
+    const roofLines = []
+
+    roofBases.forEach((roofBase) => {
+      innerLines.push(...roofBase.innerLines)
+      roofLines.push(...roofBase.lines)
     })
 
     auxiliaryLines.forEach((line1) => {
-      allLines.forEach((line2) => {
+      let interSectionPointsWithRoofLines = []
+
+      //지붕선과 만나는 점을 찾는다.
+      roofLines.forEach((line2) => {
+        const intersectionPoint = calculateIntersection(line1, line2)
+        if (!intersectionPoint) {
+          return
+        }
+        // 기존 점과 겹치는지 확인
+        if (interSectionPointsWithRoofLines.some((point) => point.x === intersectionPoint.x && point.y === intersectionPoint.y)) {
+          return
+        }
+
+        interSectionPointsWithRoofLines.push(intersectionPoint)
+      })
+
+      //지붕선과 만나는 점이 두개일 경우 넘친 보조선을 잘라준다 (케라바로 만든 마루)
+      if (interSectionPointsWithRoofLines.length === 2) {
+        const newLine = addLine(
+          [
+            interSectionPointsWithRoofLines[0].x,
+            interSectionPointsWithRoofLines[0].y,
+            interSectionPointsWithRoofLines[1].x,
+            interSectionPointsWithRoofLines[1].y,
+          ],
+          {
+            stroke: 'black',
+            strokeWidth: 1,
+            selectable: false,
+            name: 'auxiliaryLine',
+            isFixed: true,
+          },
+        )
+        lineHistory.current.push(newLine)
+        removeLine(line1)
+        intersectionPoints.current.push(...interSectionPointsWithRoofLines)
+        return
+      }
+
+      //보조선과 만나는 점을 찾는다.
+      innerLines.forEach((line2) => {
         if (line1 === line2) {
           return
         }
@@ -615,6 +660,53 @@ export function useAuxiliaryDrawing(id) {
         lineHistory.current.push(newLine)
         removeLine(line1)
       })
+
+      /*auxiliaryLines.forEach((line1) => {
+        allLines.forEach((line2) => {
+          if (line1 === line2) {
+            return
+          }
+          const intersectionPoint = calculateIntersection(line1, line2)
+          if (!intersectionPoint) {
+            return
+          }
+          roofAdsorptionPoints.current.push(intersectionPoint)
+          intersectionPoints.current.push(intersectionPoint)
+
+          const distance1 = distanceBetweenPoints({ x: line1.x1, y: line1.y1 }, intersectionPoint)
+          const distance2 = distanceBetweenPoints({ x: line1.x2, y: line1.y2 }, intersectionPoint)
+
+          if (distance1 === 0 || distance2 === 0) {
+            return
+          }
+          //historyLine에서 기존 line을 제거한다.
+          lineHistory.current = lineHistory.current.filter((history) => history !== line1)
+
+          let newLine
+
+          if (distance1 >= distance2) {
+            newLine = addLine([line1.x1, line1.y1, intersectionPoint.x, intersectionPoint.y], {
+              stroke: 'black',
+              strokeWidth: 1,
+              selectable: false,
+              name: 'auxiliaryLine',
+              isFixed: true,
+              intersectionPoint,
+            })
+          } else {
+            newLine = addLine([line1.x2, line1.y2, intersectionPoint.x, intersectionPoint.y], {
+              stroke: 'black',
+              strokeWidth: 1,
+              selectable: false,
+              name: 'auxiliaryLine',
+              isFixed: true,
+              intersectionPoint,
+            })
+          }
+          lineHistory.current.push(newLine)
+          removeLine(line1)
+        })
+      })*/
     })
     addCanvasMouseEventListener('mouse:move', mouseMove)
   }
diff --git a/src/hooks/roofcover/useMovementSetting.js b/src/hooks/roofcover/useMovementSetting.js
index bdee51e4..f0814a44 100644
--- a/src/hooks/roofcover/useMovementSetting.js
+++ b/src/hooks/roofcover/useMovementSetting.js
@@ -70,9 +70,7 @@ export function useMovementSetting(id) {
       updownEvent(e)
     }
   }
-  const flowLineEvent = (e) => {
-    console.log('flow')
-  }
+  const flowLineEvent = (e) => {}
 
   const updownEvent = (e) => {
     const target = canvas.getActiveObject()
@@ -113,18 +111,24 @@ export function useMovementSetting(id) {
     canvas?.renderAll()
   }
 
-  const getOnlyDecimal = function (_number, _length) {
-    let result
-
-    result = _number % 1
-
-    result = Number(result.toFixed(_length))
-
-    return result * 10
-  }
-
   const handleSave = () => {
-    closePopup(id)
+    if (type === TYPE.FLOW_LINE) {
+      // 동선이동
+      if (FLOW_LINE_REF.DOWN_LEFT_RADIO_REF.current.checked) {
+        // 높이 변경: 아래, 왼쪽 체크
+      } else {
+        // 높이 변경: 위, 오른쪽 체크
+      }
+    } else {
+      // 형 올림내림
+      if (UP_DOWN_REF.UP_RADIO_REF.current.checked) {
+        // 자릿수를 올리다 체크
+        const length = Number(UP_DOWN_REF.UP_INPUT_REF.current.value)
+      } else {
+        // 자릿수를 내리다 체크
+        const length = Number(UP_DOWN_REF.DOWN_INPUT_REF.current.value)
+      }
+    }
   }
 
   return {
diff --git a/src/hooks/useContextMenu.js b/src/hooks/useContextMenu.js
index 99fa585f..62c8139c 100644
--- a/src/hooks/useContextMenu.js
+++ b/src/hooks/useContextMenu.js
@@ -43,7 +43,7 @@ export function useContextMenu() {
   const { addPopup } = usePopup()
   const [popupId, setPopupId] = useState(uuidv4())
   const [gridColor, setGridColor] = useRecoilState(gridColorState)
-  const { deleteObject, moveObject, copyObject, editText, changeDimensionExtendLine } = useCommonUtils()
+  const { deleteObject, moveObject, copyObject, editText, changeDimensionExtendLine, deleteOuterLineObject } = useCommonUtils()
   const [qContextMenu, setQContextMenu] = useRecoilState(contextMenuState)
   const [cell, setCell] = useState(null)
   const [column, setColumn] = useState(null)
@@ -116,6 +116,7 @@ export function useContextMenu() {
             {
               id: 'wallLineRemove',
               name: getMessage('contextmenu.wallline.remove'),
+              fn: () => deleteOuterLineObject(),
             },
             {
               id: 'imageSizeEdit',
diff --git a/src/util/qpolygon-utils.js b/src/util/qpolygon-utils.js
index c5ddc9cb..7ca7fb79 100644
--- a/src/util/qpolygon-utils.js
+++ b/src/util/qpolygon-utils.js
@@ -1166,7 +1166,7 @@ export const splitPolygonWithLines = (polygon) => {
 }
 
 const isSamePoint = (a, b) => {
-  return a.x === b.x && a.y === b.y
+  return Math.abs(Math.round(a.x) - Math.round(b.x)) <= 1 && Math.abs(Math.round(a.y) - Math.round(b.y)) <= 1
 }
 
 /**