diff --git a/services/dslm/dslm_core_defines.h b/services/dslm/dslm_core_defines.h
index 48b20ab77b8a7bc55c7d2c2e97faf499e51bdac9..5f5a5aeb675e6358c78bf6e35882b08b7384d745 100644
--- a/services/dslm/dslm_core_defines.h
+++ b/services/dslm/dslm_core_defines.h
@@ -57,6 +57,7 @@ typedef struct DslmDeviceInfo {
     ListHead notifyList;
     uint32_t historyListSize;
     ListHead historyList;
+    uint32_t osType;
 } DslmDeviceInfo;
 
 static inline uint32_t GetCurrentVersion(void)
diff --git a/services/dslm/dslm_device_list.c b/services/dslm/dslm_device_list.c
index ecdb5f33c3431b356698496d79d6f3f9833edded..9ad06b53a94d8e41956f3710c860e089934502f1 100644
--- a/services/dslm/dslm_device_list.c
+++ b/services/dslm/dslm_device_list.c
@@ -31,6 +31,7 @@
 #include "utils_state_machine.h"
 
 #define MAX_DEVICE_CNT 128
+#define DEFAULT_TYPE 10
 
 static inline Mutex *GetDeviceListMutex(void)
 {
@@ -150,3 +151,21 @@ void ForEachDeviceDump(const ProcessDumpFunction dumper, int32_t dumpHandle)
     }
     UnlockMutex(GetDeviceListMutex());
 }
+
+bool JudgeListDeviceType()
+{
+    bool result = true;
+    ListNode *node = NULL;
+
+    LockMutex(GetDeviceListMutex());
+    FOREACH_LIST_NODE (node, GetDeviceList()) {
+        DslmDeviceInfo *info = LIST_ENTRY(node, DslmDeviceInfo, linkNode);
+        if (info->osType != DEFAULT_TYPE) {
+            result = false;
+            break;
+        }
+    }
+    UnlockMutex(GetDeviceListMutex());
+
+    return result;
+}
\ No newline at end of file
diff --git a/services/dslm/dslm_device_list.h b/services/dslm/dslm_device_list.h
index 7f140281775c4a82fdc9c135cb6e46944b22f17d..ee4abec65099f5ee5d8a0f857262fb1033e2ec7b 100644
--- a/services/dslm/dslm_device_list.h
+++ b/services/dslm/dslm_device_list.h
@@ -41,6 +41,8 @@ bool IsSameDevice(const DeviceIdentify *first, const DeviceIdentify *second);
 
 void ForEachDeviceDump(const ProcessDumpFunction dumper, int32_t dumpHandle);
 
+bool JudgeListDeviceType();
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/services/dslm/dslm_fsm_process.c b/services/dslm/dslm_fsm_process.c
index fd5b8df84cb42abd5ec0b2800ef8108dd8776d50..ee3e68808f3b70631dfd42f4af6d04e325726127 100644
--- a/services/dslm/dslm_fsm_process.c
+++ b/services/dslm/dslm_fsm_process.c
@@ -199,6 +199,7 @@ static bool ProcessDeviceOnline(const StateMachine *machine, uint32_t event, con
     }
     uint32_t level = deviceAttributes & 0xFF;
     uint32_t osType = (deviceAttributes & 0xFF00) >> TYPE_PLACE;
+    info->osType = osType;
     if (level == 0 && osType == DEFAULT_TYPE) {
         level = 1;
         SECURITY_LOG_INFO("level set 1");
diff --git a/services/sa/standard/dslm_ipc_process.cpp b/services/sa/standard/dslm_ipc_process.cpp
index 3c827f7a0c9cc5d218cbd8555236714f03f9dc19..a12e2df77b97b19d00a3bbc27e386aadda1b1d1b 100644
--- a/services/sa/standard/dslm_ipc_process.cpp
+++ b/services/sa/standard/dslm_ipc_process.cpp
@@ -117,7 +117,7 @@ static void TimerProcessUnloadSystemAbility(const void *context)
 {
     (void)context;
 
-    if (GetDeviceListSize() > 1) {
+    if (!JudgeListDeviceType()) {
         return;
     }
 
@@ -137,7 +137,7 @@ static void TimerProcessUnloadSystemAbility(const void *context)
 
 static void SetSystemAbilityUnloadSchedule(TimerHandle &handle)
 {
-    if (GetDeviceListSize() > 1) {
+    if (!JudgeListDeviceType()) {
         return;
     }