diff --git a/app/src/main/java/com/example/medilightv2android/ble/BleManager.kt b/app/src/main/java/com/example/medilightv2android/ble/BleManager.kt
index 473649b..64900c4 100644
--- a/app/src/main/java/com/example/medilightv2android/ble/BleManager.kt
+++ b/app/src/main/java/com/example/medilightv2android/ble/BleManager.kt
@@ -70,6 +70,8 @@ class BleManager private constructor(private val context: Context) {
         private set
     private var reconnectAttempt = 0
     private val reconnectIntervalMs: Long = 3000
+    /** max retry — 10회 시도 후 포기 (≈ 8s scan × 10 + 간격, 약 100~120초). */
+    private val MAX_RECONNECT_ATTEMPTS = 10
     private var reconnectTimer: Runnable? = null
     @Volatile private var lastRxTimestamp: Long = 0
     private var watchdogTimer: Runnable? = null
@@ -738,6 +740,14 @@ class BleManager private constructor(private val context: Context) {
             isReconnecting.value = false
             return
         }
+        // max 시도 가드 — 무한 루프 방지. 초과 시 사용자가 명시적으로 재시도하도록.
+        if (reconnectAttempt >= MAX_RECONNECT_ATTEMPTS) {
+            debugLogger.warn("RECONNECT_GIVE_UP after ${reconnectAttempt} attempts — manual retry required")
+            isReconnecting.value = false
+            reconnectAttempt = 0
+            onReconnectionFailed?.invoke()
+            return
+        }
 
         reconnectAttempt++
         reconnectConnecting = false