diff --git a/src/hooks/roofcover/useAuxiliaryDrawing.js b/src/hooks/roofcover/useAuxiliaryDrawing.js
index 46311ad9..e9aa7d93 100644
--- a/src/hooks/roofcover/useAuxiliaryDrawing.js
+++ b/src/hooks/roofcover/useAuxiliaryDrawing.js
@@ -21,7 +21,7 @@ import { useAdsorptionPoint } from '@/hooks/useAdsorptionPoint'
 import { useSwal } from '@/hooks/useSwal'
 import { booleanPointInPolygon } from '@turf/turf'
 import { usePopup } from '@/hooks/usePopup'
-import { calculateAngle } from '@/util/qpolygon-utils'
+import { calculateAngle, isSamePoint } from '@/util/qpolygon-utils'
 import { QPolygon } from '@/components/fabric/QPolygon'
 import { POLYGON_TYPE } from '@/common/common'
 
@@ -587,7 +587,7 @@ export function useAuxiliaryDrawing(id) {
           return
         }
         // 기존 점과 겹치는지 확인
-        if (interSectionPointsWithRoofLines.some((point) => point.x === intersectionPoint.x && point.y === intersectionPoint.y)) {
+        if (interSectionPointsWithRoofLines.some((point) => isSamePoint(point, intersectionPoint))) {
           return
         }
 
diff --git a/src/util/qpolygon-utils.js b/src/util/qpolygon-utils.js
index 118e67dc..e373df8d 100644
--- a/src/util/qpolygon-utils.js
+++ b/src/util/qpolygon-utils.js
@@ -1445,7 +1445,7 @@ function removeDuplicatePolygons(polygons) {
   return uniquePolygons
 }
 
-const isSamePoint = (a, b) => {
+export const isSamePoint = (a, b) => {
   return Math.abs(Math.round(a.x) - Math.round(b.x)) <= 1 && Math.abs(Math.round(a.y) - Math.round(b.y)) <= 1
 }