diff --git a/app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PlacementGuideView.kt b/app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PlacementGuideView.kt
index f36c7f4..b148561 100644
--- a/app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PlacementGuideView.kt
+++ b/app/src/main/java/com/example/medilightv2android/ui/views/monitoring/PlacementGuideView.kt
@@ -72,6 +72,17 @@ fun PlacementGuideView(appState: AppState) {
     // 2단계 순차 탐색: VERTICAL → LATERAL → GREEN
     var placementPhase by remember { mutableStateOf(PlacementPhase.VERTICAL) }
 
+    // 화면 진입 시 상태 리셋
+    LaunchedEffect(Unit) {
+        placementPhase = PlacementPhase.VERTICAL
+        isLocked = false
+        scanCount = 0
+        placementScore = 0
+        directionHint = "센서를 아래에서 위로 천천히 이동하세요"
+        directionIcon = ""
+        for (i in 0 until 6) { channelDetected[i] = false; channelUrineLen[i] = 0 }
+    }
+
     val detectedCount = channelDetected.count { it }
 
     Column(