diff --git a/services/src/ime_info_inquirer.cpp b/services/src/ime_info_inquirer.cpp
index e2ba3a6281fdbfe088230b03103cb6b1d27a1095..8248168655c4b9aaafdf9e6fe07f69e0fd3c1972 100644
--- a/services/src/ime_info_inquirer.cpp
+++ b/services/src/ime_info_inquirer.cpp
@@ -703,7 +703,6 @@ std::shared_ptr<SubProperty> ImeInfoInquirer::GetCurrentSubtype(int32_t userId)
             return std::make_shared<SubProperty>(*iter);
         }
         IMSA_HILOGW("subtype %{public}s not found.", currentIme->subName.c_str());
-        ImeCfgManager::GetInstance().ModifyImeCfg({ userId, currentIme->imeId, it->subProps[0].id, false });
         return std::make_shared<SubProperty>(it->subProps[0]);
     }
 
@@ -750,16 +749,10 @@ std::shared_ptr<ImeNativeCfg> ImeInfoInquirer::GetImeToStart(int32_t userId)
     IMSA_HILOGD("userId: %{public}d, currentIme: %{public}s.", userId, currentImeCfg->imeId.c_str());
     if (currentImeCfg->imeId.empty() || !IsImeInstalled(userId, currentImeCfg->bundleName, currentImeCfg->extName)) {
         auto newIme = GetDefaultIme();
-        auto info = GetDefaultImeInfo(userId);
-        if (info == nullptr) {
-            IMSA_HILOGW("failed to GetDefaultImeInfo");
-            newIme.subName = "";
-        } else {
-            newIme.subName = info->subProp.id;
-        }
+        newIme.subName = "";
         currentImeCfg->imeId.empty()
-            ? ImeCfgManager::GetInstance().AddImeCfg({ userId, newIme.imeId, newIme.subName, false })
-            : ImeCfgManager::GetInstance().ModifyImeCfg({ userId, newIme.imeId, newIme.subName, false});
+            ? ImeCfgManager::GetInstance().AddImeCfg({ userId, newIme.imeId, "", false })
+            : ImeCfgManager::GetInstance().ModifyImeCfg({ userId, newIme.imeId, "", false});
         return std::make_shared<ImeNativeCfg>(newIme);
     }
     return currentImeCfg;
diff --git a/services/src/input_method_system_ability.cpp b/services/src/input_method_system_ability.cpp
index f67d34ef8aa8955e116a1c762eba964657c35f5a..1191d2c4f3693eb76ae9d76de34c63719a856784 100644
--- a/services/src/input_method_system_ability.cpp
+++ b/services/src/input_method_system_ability.cpp
@@ -1019,9 +1019,9 @@ int32_t InputMethodSystemAbility::OnSwitchInputMethod(int32_t userId, const Swit
     {
         InputMethodSyncTrace tracer("InputMethodSystemAbility_OnSwitchInputMethod");
         std::string targetImeName = info->prop.name + "/" + info->prop.id;
-        ImeCfgManager::GetInstance().ModifyImeCfg({ userId, targetImeName, info->subProp.id, true });
+        ImeCfgManager::GetInstance().ModifyImeCfg({ userId, targetImeName, switchInfo.subName, true });
         auto targetIme = std::make_shared<ImeNativeCfg>(ImeNativeCfg{
-            targetImeName, info->prop.name, switchInfo.subName.empty() ? "" : info->subProp.id, info->prop.id });
+            targetImeName, info->prop.name, switchInfo.subName, info->prop.id });
         ret = session->StartIme(targetIme);
         if (ret != ErrorCode::NO_ERROR) {
             InputMethodSysEvent::GetInstance().InputmethodFaultReporter(
diff --git a/services/src/peruser_session.cpp b/services/src/peruser_session.cpp
index 0e01d5bfebbd8c4cd785a4b7eaa2caacc70b9a52..1d9795c1f330242d3bff0555fc6a5e9c584de1f1 100644
--- a/services/src/peruser_session.cpp
+++ b/services/src/peruser_session.cpp
@@ -55,6 +55,7 @@ constexpr uint32_t CHECK_IME_RUNNING_RETRY_TIMES = 10;
 constexpr int32_t MAX_RESTART_NUM = 3;
 constexpr int32_t IME_RESET_TIME_OUT = 3;
 constexpr int32_t MAX_RESTART_TASKS = 2;
+constexpr const char *UNDEFINED = "undefined";
 PerUserSession::PerUserSession(int userId) : userId_(userId) { }
 
 PerUserSession::PerUserSession(int32_t userId, const std::shared_ptr<AppExecFwk::EventHandler> &eventHandler)
@@ -1103,7 +1104,11 @@ int32_t PerUserSession::StartCurrentIme(bool isStopCurrentIme)
         IMSA_HILOGD("currentImeInfo is nullptr!");
         return ErrorCode::NO_ERROR;
     }
-
+    if (imeToStart->subName.empty()) {
+        IMSA_HILOGW("undefined subtype");
+        currentImeInfo->subProp.id = UNDEFINED;
+        currentImeInfo->subProp.name = UNDEFINED;
+    }
     NotifyImeChangeToClients(currentImeInfo->prop, currentImeInfo->subProp);
     ret = SwitchSubtypeWithoutStartIme(currentImeInfo->subProp);
     if (ret != ErrorCode::NO_ERROR) {