diff --git a/src/util/skeleton-utils.js b/src/util/skeleton-utils.js
index c7f3685b..599345e2 100644
--- a/src/util/skeleton-utils.js
+++ b/src/util/skeleton-utils.js
@@ -837,7 +837,8 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
           roofId     : roofId,
           attributes : {
             type: 'eaveHelpLine',
-            isStart : true
+            isStart : true,
+            pitch: wallLine.attributes.pitch,
           }
         });
         //coordinateText(line)
@@ -888,7 +889,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                 ePoint = {x: wallBaseLine.x1, y: wallBaseLine.y1};
                 newPStart.y = wallBaseLine.y1
 
-                findPoints.push({ x: ePoint.x, y: ePoint.y });
+                findPoints.push({ x: ePoint.x, y: ePoint.y, position: 'left_in_start' });
                 const newPointX = Big(roofLine.x1).plus(moveDist).abs().toNumber()
                 const pDist = Big(wallLine.x1).minus(roofLine.x1).abs().toNumber()
                 const pLineY = Big(roofLine.y1).minus(0).abs().toNumber()
@@ -912,7 +913,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                 ePoint = {x: wallBaseLine.x2, y: wallBaseLine.y2};
                 newPEnd.y = wallBaseLine.y2
 
-                findPoints.push({ x: ePoint.x, y: ePoint.y });
+                findPoints.push({ x: ePoint.x, y: ePoint.y, position: 'left_in_end' });
                 const newPointX = Big(roofLine.x1).plus(moveDist).toNumber()
                 const pDist = Big(wallLine.x1).minus(roofLine.x1).abs().toNumber()
                 const pLineY = Big(roofLine.y2).minus(0).abs().toNumber()
@@ -950,7 +951,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                   }
                   getAddLine({ y: bStartY, x: wallLine.x2 }, { y: roofLine.y1, x: wallLine.x1 }, 'magenta')
                   getAddLine({ y: newLine.y1, x: newLine.x1 }, { y: newLine.y2, x: wallLine.x2 }, 'Gray')
-                  findPoints.push({ y: aStartY, x: newPStart.x });
+                  findPoints.push({ y: aStartY, x: newPStart.x, position: 'left_out_start' });
                 }else{
                   const cLineY = Big(wallBaseLine.x1).minus(wallLine.x1).abs().toNumber()
                   newPStart.y = Big(newPStart.y).minus(cLineY).toNumber();
@@ -964,6 +965,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                 }
               }
 
+
               if(isStartEnd.end){
                 const moveDist = Big(wallLine.x1).minus(wallBaseLine.x1).abs().toNumber()
                 const aStartY = Big(roofLine.y2).plus(moveDist).toNumber()
@@ -982,7 +984,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                   }
                   getAddLine({ y: bStartY, x: wallLine.x1 }, { y: roofLine.y2, x: wallLine.x2 }, 'magenta')
                   getAddLine({ y: newLine.y2, x: newLine.x2 }, { y: newLine.y1, x: wallLine.x1 }, 'Gray')
-                  findPoints.push({ y: aStartY, x: newPEnd.x });
+                  findPoints.push({ y: aStartY, x: newPEnd.x, position: 'left_out_end' });
                 }else{
                   const cLineY = Big(wallBaseLine.x2).minus(wallLine.x2).abs().toNumber()
                   newPEnd.y = Big(newPEnd.y).plus(cLineY).toNumber();
@@ -990,6 +992,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                   if(inLine){
                     getAddLine({ y: newPEnd.y, x: newPEnd.x }, { y: inLine.y2, x: inLine.x2 }, 'purple')
                   }else {
+
                     newPEnd.y = wallLine.y2
                   }
 
@@ -1005,7 +1008,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                 ePoint = {x: wallBaseLine.x1, y: wallBaseLine.y1};
                 newPStart.y = wallBaseLine.y1
 
-                findPoints.push({ x: ePoint.x, y: ePoint.y });
+                findPoints.push({ x: ePoint.x, y: ePoint.y, position: 'right_in_start'});
                 const newPointX = Big(roofLine.x1).minus(moveDist).abs().toNumber()
                 const pDist = Big(wallLine.x1).minus(roofLine.x1).abs().toNumber()
                 const pLineY = Big(roofLine.y1).minus(0).abs().toNumber()
@@ -1029,7 +1032,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                 ePoint = {x: wallBaseLine.x2, y: wallBaseLine.y2};
                 newPEnd.y = wallBaseLine.y2
 
-                findPoints.push({ x: ePoint.x, y: ePoint.y });
+                findPoints.push({ x: ePoint.x, y: ePoint.y, position: 'right_in_end' });
                 const newPointX = Big(roofLine.x1).minus(moveDist).toNumber()
                 const pDist = Big(wallLine.x1).minus(roofLine.x1).abs().toNumber()
                 const pLineY = Big(roofLine.y2).minus(0).abs().toNumber()
@@ -1066,7 +1069,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                   }
                   getAddLine({ y: bStartY, x: wallLine.x2 }, { y: roofLine.y1, x: wallLine.x1 }, 'magenta')
                   getAddLine({ y: newLine.y1, x: newLine.x1 }, { y: newLine.y2, x: wallLine.x2 }, 'Gray')
-                  findPoints.push({ y: aStartY, x: newPEnd.x });
+                  findPoints.push({ y: aStartY, x: newPEnd.x, position: 'right_out_start' });
                 }else{
                     const cLineY = Big(wallBaseLine.x1).minus(wallLine.x1).abs().toNumber()
                     newPStart.y = Big(newPStart.y).plus(cLineY).toNumber();
@@ -1098,7 +1101,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                 if(Math.abs(wallBaseLine.y2 -  wallLine.y2) < 0.1) {
                   getAddLine({ y: bStartY, x: wallLine.x1 }, { y: roofLine.y2, x: wallLine.x2 }, 'magenta')
                   getAddLine({ y: newLine.y2, x: newLine.x2 }, { y: newLine.y1, x: wallLine.x1 }, 'Gray')
-                  findPoints.push({ y: aStartY, x: newPEnd.x });
+                  findPoints.push({ y: aStartY, x: newPEnd.x, position: 'right_out_end' });
                 }else{
                   const cLineY = Big(wallBaseLine.x2).minus(wallLine.x2).abs().toNumber()
                   newPEnd.y = Big(newPEnd.y).minus(cLineY).toNumber();
@@ -1156,7 +1159,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                 let idx = (0 >= index - 1)?roofLines.length:index
                 const pLineY = roofLines[idx-1].y1
                 getAddLine({ x: newPStart.x, y: newPStart.y }, { x: sPoint.x, y: sPoint.y }, 'blue')
-                findPoints.push({ x: sPoint.x, y: sPoint.y });
+                findPoints.push({ x: sPoint.x, y: sPoint.y, position: 'top_in_start' });
 
                 if(Math.abs(wallBaseLine.x1 -  wallLine.x1) < 0.1) {
                   getAddLine({ x: pLineX, y: pLineY }, { x: pLineX, y: newPointY }, 'green')
@@ -1177,7 +1180,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                 let idx = roofLines.length < index + 1 ? 0 : index
                 const pLineY = roofLines[idx + 1].y2
                 getAddLine({ x: newPEnd.x, y: newPEnd.y }, { x: sPoint.x, y: sPoint.y }, 'blue')
-                findPoints.push({ x: sPoint.x, y: sPoint.y })
+                findPoints.push({ x: sPoint.x, y: sPoint.y, position: 'top_in_end' });
 
                 if (Math.abs(wallBaseLine.x2 - wallLine.x2) < 0.1) {
                   getAddLine({ x: pLineX, y: pLineY }, { x: pLineX, y: newPointY }, 'green')
@@ -1206,7 +1209,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                   }
                   getAddLine({ x: bStartX, y: wallLine.y1 }, { x: roofLine.x1, y: wallLine.y1 }, 'magenta')
                   getAddLine({ x: newLine.x1, y: newLine.y1 }, { x: newLine.x1, y: wallLine.y1 }, 'Gray')
-                  findPoints.push({ x: aStartX, y: newPEnd.y });
+                  findPoints.push({ x: aStartX, y: newPEnd.y, position: 'top_out_start' });
                 }else{
                   const cLineX = Big(wallBaseLine.y1).minus(wallLine.y1).abs().toNumber()
                   newPStart.x = Big(newPStart.x).plus(cLineX).toNumber();
@@ -1237,7 +1240,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                   }
                   getAddLine({ x: bStartX, y: wallLine.y1 }, { x: roofLine.x2, y: wallLine.y2 }, 'magenta')
                   getAddLine({ x: newLine.x2, y: newLine.y2 }, { x: newLine.x1, y: wallLine.y1 }, 'Gray')
-                  findPoints.push({ x: aStartX, y: newPEnd.y });
+                  findPoints.push({ x: aStartX, y: newPEnd.y, position: 'top_out_end' });
                 }else{
                   const cLineX = Big(wallLine.y2).minus(wallBaseLine.y2).abs().toNumber()
                   newPEnd.x = Big(newPEnd.x).minus(cLineX).toNumber();
@@ -1264,7 +1267,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                 let idx = (0 > index - 1)?roofLines.length:index
                 const pLineY = roofLines[idx-1].y1
                 getAddLine({ x: newPStart.x, y: newPStart.y }, { x: sPoint.x, y: sPoint.y }, 'blue')
-                findPoints.push({ x: sPoint.x, y: sPoint.y });
+                findPoints.push({ x: sPoint.x, y: sPoint.y, position: 'bottom_in_start' });
 
                 if(Math.abs(wallBaseLine.x1 -  wallLine.x1) < 0.1) {
                   getAddLine({ x: pLineX, y: pLineY }, { x: pLineX, y: newPointY }, 'green')
@@ -1286,7 +1289,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                 let idx = (roofLines.length < index + 1)?0:index
                 const pLineY = roofLines[idx+1].y2
                 getAddLine({ x: newPEnd.x, y: newPEnd.y }, { x: sPoint.x, y: sPoint.y }, 'blue')
-                findPoints.push({ x: sPoint.x, y: sPoint.y });
+                findPoints.push({ x: sPoint.x, y: sPoint.y, position: 'bottom_in_end' });
 
                 if(Math.abs(wallBaseLine.x2 -  wallLine.x2) < 0.1) {
                   getAddLine({ x: pLineX, y: pLineY }, { x: pLineX, y: newPointY }, 'green')
@@ -1348,7 +1351,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
                   }
                   getAddLine({ x: bStartX, y: wallLine.y1 }, { x: roofLine.x2, y: wallLine.y2 }, 'magenta')
                   getAddLine({ x: newLine.x2, y: newLine.y2 }, { x: newLine.x1, y: wallLine.y1 }, 'Gray')
-                  findPoints.push({ x: aStartX, y: newPEnd.y });
+                  findPoints.push({ x: aStartX, y: newPEnd.y, position: 'bottom_out_end' });
                 }else{
                   const cLineX = Big(wallBaseLine.y2).minus(wallLine.y2).abs().toNumber()
                   newPEnd.x = Big(newPEnd.x).plus(cLineX).toNumber();
@@ -1385,8 +1388,8 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode) => {
 
   if (findPoints.length > 0) {
     // 모든 점에 대해 라인 업데이트를 누적
-    return findPoints.reduce((lines, point) => {
-      return updateAndAddLine(lines, point);
+    return findPoints.reduce((innerLines, point) => {
+      return updateAndAddLine(innerLines, point);
     }, [...innerLines]);
 
   }
@@ -3027,7 +3030,41 @@ function updateAndAddLine(innerLines, targetPoint) {
 
   // 단순 거리 비교: 타겟 포인트가 시작점에 더 가까우면 시작점을 수정(isUpdatingStart = true)
   //무조건 start
-  const isUpdatingStart = true //distanceToStart < distanceToEnd;
+  let isUpdatingStart = false //distanceToStart < distanceToEnd;
+  if(targetPoint.position === "top_in_start"){
+    if(foundLine.y2 >= foundLine.y1){
+      isUpdatingStart = true;
+    }
+  }else if(targetPoint.position === "top_in_end"){
+    if(foundLine.y2 >= foundLine.y1){
+      isUpdatingStart = true;
+    }
+
+  }else if(targetPoint.position === "bottom_in_start"){
+    if(foundLine.y2 <= foundLine.y1){
+      isUpdatingStart = true;
+    }
+  }else if(targetPoint.position === "bottom_in_end"){
+    if(foundLine.y2 <= foundLine.y1){
+      isUpdatingStart = true;
+    }
+  }else if(targetPoint.position === "left_in_start"){
+    if(foundLine.x2 >= foundLine.x1){
+      isUpdatingStart = true;
+    }
+  }else if(targetPoint.position === "left_in_end"){
+    if(foundLine.x2 >= foundLine.x1){
+      isUpdatingStart = true;
+    }
+  }else if(targetPoint.position === "right_in_start"){
+    if(foundLine.x2 <= foundLine.x1){
+      isUpdatingStart = true;
+    }
+  }else if(targetPoint.position === "right_in_end"){
+    if(foundLine.x2 <= foundLine.x1){
+      isUpdatingStart = true;
+    }
+  }
 
   const updatedLine = {
     ...foundLine,