diff --git a/interfaces/innerkits/include/service_watcher.h b/interfaces/innerkits/include/service_watcher.h
index 7364bc37a28aa14150a8770f63892def73122553..4708e829a36fe874f93a28a99c75f9538a89451a 100644
--- a/interfaces/innerkits/include/service_watcher.h
+++ b/interfaces/innerkits/include/service_watcher.h
@@ -16,6 +16,7 @@
 #ifndef SERVICE_WATCH_API_H
 #define SERVICE_WATCH_API_H
 
+#include <unistd.h>
 #include "init_param.h"
 #include "service_control.h"
 
@@ -25,7 +26,14 @@ extern "C" {
 #endif
 #endif
 
-typedef void (*ServiceStatusChangePtr)(const char *key, ServiceStatus status);
+#define INVALID_PID 0
+
+typedef struct serviceInfo {
+    ServiceStatus status;
+    pid_t pid;
+} ServiceInfo;
+
+typedef void (*ServiceStatusChangePtr)(const char *key, const ServiceInfo *serviceInfo);
 int ServiceWatchForStatus(const char *serviceName, ServiceStatusChangePtr changeCallback);
 
 #ifdef __cplusplus
diff --git a/interfaces/innerkits/service_watcher/service_watcher.c b/interfaces/innerkits/service_watcher/service_watcher.c
index 7efc5a8bf100df3857918cdb65b8ceafe48f8b3e..58f18a045f1120e7066abf74a82f75d19fa534c5 100644
--- a/interfaces/innerkits/service_watcher/service_watcher.c
+++ b/interfaces/innerkits/service_watcher/service_watcher.c
@@ -31,9 +31,17 @@ static void ServiceStateChange(const char *key, const char *value, void *context
     uint32_t v = 0;
     int ret = StringToUint(value, &v);
     BEGET_ERROR_CHECK(ret == 0, return, "Failed to get value from %s", value);
-    ServiceStatus status = (ServiceStatus)v;
+
+    // get pid
+    char paramName[PARAM_NAME_LEN_MAX] = { 0 };
+    ret = snprintf_s(paramName, sizeof(paramName), sizeof(paramName) - 1, "%s.pid", key);
+    BEGET_ERROR_CHECK(ret != -1, return, "Failed to get format pid ret %d for %s ", ret, key);
+
+    ServiceInfo info = {0};
+    info.status = (ServiceStatus)v;
+    info.pid = (pid_t)GetUintParameter(paramName, INVALID_PID);
     if (strlen(key) > strlen(STARTUP_SERVICE_CTL)) {
-        callback(key + strlen(STARTUP_SERVICE_CTL) + 1, status);
+        callback(key + strlen(STARTUP_SERVICE_CTL) + 1, &info);
     } else {
         BEGET_LOGE("Invalid service name %s %s", key, value);
     }
@@ -41,19 +49,23 @@ static void ServiceStateChange(const char *key, const char *value, void *context
 
 int ServiceWatchForStatus(const char *serviceName, ServiceStatusChangePtr changeCallback)
 {
-    if (serviceName == NULL) {
-        BEGET_LOGE("Service wait failed, service is null.");
-        return -1;
-    }
+    BEGET_ERROR_CHECK(serviceName != NULL, return EC_INVALID, "Service watch failed, service is null.");
+    BEGET_ERROR_CHECK(changeCallback != NULL, return EC_INVALID, "Service watch failed, callback is null.");
+
     char paramName[PARAM_NAME_LEN_MAX] = {0};
+    BEGET_LOGI("Watcher service %s status", serviceName);
     if (snprintf_s(paramName, PARAM_NAME_LEN_MAX, PARAM_NAME_LEN_MAX - 1,
         "%s.%s", STARTUP_SERVICE_CTL, serviceName) == -1) {
         BEGET_LOGE("Failed snprintf_s err=%d", errno);
-        return -1;
+        return EC_SYSTEM_ERR;
     }
-    if (SystemWatchParameter(paramName, ServiceStateChange, (void *)changeCallback) != 0) {
-        BEGET_LOGE("Wait param for %s failed.", paramName);
-        return -1;
+    int ret = SystemWatchParameter(paramName, ServiceStateChange, (void *)changeCallback);
+    if (ret != 0) {
+        BEGET_LOGE("Failed to watcher service %s ret %d.", serviceName, ret);
+        if (ret == DAC_RESULT_FORBIDED) {
+            return SYSPARAM_PERMISSION_DENIED;
+        }
+        return EC_SYSTEM_ERR;
     }
     return 0;
 }
diff --git a/services/init/init_common_service.c b/services/init/init_common_service.c
index 9c7da05d937627243c25be1ea51665f93a7341a2..79aae2a2daac5f57beca414ac037ae5ffeddc923 100644
--- a/services/init/init_common_service.c
+++ b/services/init/init_common_service.c
@@ -414,6 +414,7 @@ int ServiceStart(Service *service)
 int ServiceStop(Service *service)
 {
     INIT_ERROR_CHECK(service != NULL, return SERVICE_FAILURE, "stop service failed! null ptr.");
+    NotifyServiceChange(service, SERVICE_STOPPING);
     if (service->serviceJobs.jobsName[JOB_ON_STOP] != NULL) {
         DoJobNow(service->serviceJobs.jobsName[JOB_ON_STOP]);
     }
@@ -435,7 +436,6 @@ int ServiceStop(Service *service)
     }
     INIT_ERROR_CHECK(kill(service->pid, GetKillServiceSig(service->name)) == 0, return SERVICE_FAILURE,
         "stop service %s pid %d failed! err %d.", service->name, service->pid, errno);
-    NotifyServiceChange(service, SERVICE_STOPPING);
     INIT_LOGI("stop service %s, pid %d.", service->name, service->pid);
     service->pid = -1;
     NotifyServiceChange(service, SERVICE_STOPPED);
diff --git a/services/init/standard/init_service.c b/services/init/standard/init_service.c
index f164454b16f3427619677b5b877b78ced6a20e7a..2747bf6fe4258ed3db05ea29a27e62d13bfa7221 100644
--- a/services/init/standard/init_service.c
+++ b/services/init/standard/init_service.c
@@ -46,11 +46,20 @@ void NotifyServiceChange(Service *service, int status)
     char paramName[PARAM_NAME_LEN_MAX] = { 0 };
     int ret = snprintf_s(paramName, sizeof(paramName), sizeof(paramName) - 1,
         "%s.%s", STARTUP_SERVICE_CTL, service->name);
+    INIT_ERROR_CHECK(ret > 0, return, "Failed to format service name %s.", service->name);
     char statusStr[MAX_INT_LEN] = {0};
-    int ret1 = snprintf_s(statusStr, sizeof(statusStr), sizeof(statusStr) - 1, "%d", status);
-    if (ret >= 0 && ret1 > 0) {
-        SystemWriteParam(paramName, statusStr);
-    }
+    ret = snprintf_s(statusStr, sizeof(statusStr), sizeof(statusStr) - 1, "%d", status);
+    INIT_ERROR_CHECK(ret > 0, return, "Failed to format service status %s.", service->name);
+    SystemWriteParam(paramName, statusStr);
+
+    // write pid
+    ret = snprintf_s(paramName, sizeof(paramName), sizeof(paramName) - 1,
+        "%s.%s.pid", STARTUP_SERVICE_CTL, service->name);
+    INIT_ERROR_CHECK(ret > 0, return, "Failed to format service pid name %s.", service->name);
+    ret = snprintf_s(statusStr, sizeof(statusStr), sizeof(statusStr) - 1,
+        "%u", (service->pid == -1) ? 0 : service->pid);
+    INIT_ERROR_CHECK(ret > 0, return, "Failed to format service pid %s.", service->name);
+    SystemWriteParam(paramName, statusStr);
 }
 
 int IsForbidden(const char *fieldStr)
diff --git a/services/param/base/param_comm.c b/services/param/base/param_comm.c
index c0ae772dfef8dc0e3cb98a6d393b80184096b741..2afae99da50eae66c84e2b0775ac8c2939363799 100644
--- a/services/param/base/param_comm.c
+++ b/services/param/base/param_comm.c
@@ -35,6 +35,8 @@ INIT_LOCAL_API WorkSpace *GetWorkSpace(uint32_t labelIndex)
 {
     ParamWorkSpace *paramSpace = GetParamWorkSpace();
     PARAM_CHECK(paramSpace != NULL, return NULL, "Invalid paramSpace");
+    PARAM_CHECK(paramSpace->workSpace != NULL, return NULL, "Invalid paramSpace->workSpace");
+    PARAM_WORKSPACE_CHECK(paramSpace, return NULL, "Invalid space");
 #ifdef PARAM_SUPPORT_SELINUX
     if (labelIndex == 0) {
         return paramSpace->workSpace[0];
diff --git a/test/fuzztest/ServiceWatchForStatus_fuzzer/ServiceWatchForStatus_fuzzer.cpp b/test/fuzztest/ServiceWatchForStatus_fuzzer/ServiceWatchForStatus_fuzzer.cpp
index 275357ed98c38e359f3f12d885df87a07b6931e6..d92113369170fd3f3afdd5cfaaa97ebd70d087ea 100644
--- a/test/fuzztest/ServiceWatchForStatus_fuzzer/ServiceWatchForStatus_fuzzer.cpp
+++ b/test/fuzztest/ServiceWatchForStatus_fuzzer/ServiceWatchForStatus_fuzzer.cpp
@@ -18,9 +18,9 @@
 #include "service_watcher.h"
 #include "fuzz_utils.h"
 
-void callback(const char *key, ServiceStatus status)
+void callback(const char *key, const ServiceInfo *status)
 {
-    printf("key is: %s, ServiceStatus is: %d\n", key, status);
+    printf("key is: %s, ServiceStatus is: %d\n", key, status->status);
 }
 
 namespace OHOS {
diff --git a/test/moduletest/param_test_cmds.c b/test/moduletest/param_test_cmds.c
index 9acfd52994e1b03f8859236369cd497211a62925..9c6f7a789ce834f35de68ec099cc0110e7a7c336 100644
--- a/test/moduletest/param_test_cmds.c
+++ b/test/moduletest/param_test_cmds.c
@@ -246,10 +246,10 @@ static int32_t BShellParamCmdDisplay(BShellHandle shell, int32_t argc, char *arg
     return 0;
 }
 
-void ServiceStatusChangeTest(const char *key, ServiceStatus status)
+void ServiceStatusChangeTest(const char *key, const ServiceInfo *status)
 {
-    PLUGIN_LOGI("group-test-stage3: wait service %s status: %d", key, status);
-    if (status == SERVICE_READY || status == SERVICE_STARTED) {
+    PLUGIN_LOGI("group-test-stage3: wait service %s status: %d", key, status->status);
+    if (status->status == SERVICE_READY || status->status == SERVICE_STARTED) {
         PLUGIN_LOGI("Service %s start work", key);
     }
 }
@@ -340,6 +340,33 @@ static int32_t BShellParamCmdMemGet(BShellHandle shell, int32_t argc, char *argv
     return 0;
 }
 
+void CmdServiceStatusChange(const char *key, const ServiceInfo *status)
+{
+    static const char *serviceStatusMap[] = {
+        "idle",
+        "starting",
+        "running",
+        "ready",
+        "stopping",
+        "stopped",
+        "error",
+        "suspended",
+        "freezed",
+        "disabled",
+        "critical",
+    };
+    PLUGIN_CHECK(key != NULL && status != NULL, return, "Invalid parameter");
+    printf("Service %s status: %s pid %d \n", key,
+        ((status->status < ARRAY_LENGTH(serviceStatusMap)) ? serviceStatusMap[status->status] : "unknown"),
+        status->pid);
+}
+
+static int32_t BShellParamCmdWatchService(BShellHandle shell, int32_t argc, char *argv[])
+{
+    PLUGIN_CHECK(argc > 1, return -1, "Invalid parameter");
+    return ServiceWatchForStatus(argv[1], CmdServiceStatusChange);
+}
+
 int32_t BShellCmdRegister(BShellHandle shell, int execMode)
 {
     if (execMode == 0) {
@@ -354,12 +381,15 @@ int32_t BShellCmdRegister(BShellHandle shell, int execMode)
         const CmdInfo infos[] = {
             {"display", BShellParamCmdDisplay, "display system service", "display service", "display service"},
             {"read", BShellParamCmdRead, "read system parameter", "read [start | stop]", ""},
-            {"watcher", BShellParamCmdWatch, "watcher system parameter", "watcher [name]", ""},
+            {"watcher", BShellParamCmdWatch,
+                "watcher system parameter", "watcher parameter [name]", "watcher parameter"},
             {"install", BShellParamCmdInstall, "install plugin", "install [name]", ""},
             {"uninstall", BShellParamCmdInstall, "uninstall plugin", "uninstall [name]", ""},
             {"group", BShellParamCmdGroupTest, "group test", "group test [stage]", "group test"},
             {"display", BShellParamCmdUdidGet, "display udid", "display udid", "display udid"},
             {"display", BShellParamCmdMemGet, "display memory pid", "display memory [pid]", "display memory"},
+            {"watcher", BShellParamCmdWatchService,
+                "watcher service status", "watcher service [name]", "watcher service"},
         };
         for (size_t i = 0; i < sizeof(infos) / sizeof(infos[0]); i++) {
             BShellEnvRegisterCmd(GetShellHandle(), &infos[i]);
diff --git a/test/moduletest/service_watcher_moduleTest.cpp b/test/moduletest/service_watcher_moduleTest.cpp
index 2ee0283f9adb98722e0ef72801d25df343b084c4..386ff491f968ff81cb84703fcacfa775dec4b662 100644
--- a/test/moduletest/service_watcher_moduleTest.cpp
+++ b/test/moduletest/service_watcher_moduleTest.cpp
@@ -16,6 +16,8 @@
 #include <thread>
 #include <string>
 #include <gtest/gtest.h>
+
+#include "parameter.h"
 #include "service_control.h"
 #include "service_watcher.h"
 #include "test_utils.h"
@@ -31,9 +33,11 @@ public:
     void TearDown(void) {};
 };
 
-static void ServiceStatusChange(const char *key, ServiceStatus status)
+static void ServiceStatusChange(const char *key, const ServiceInfo *status)
 {
-    std::cout<<"service Name is: "<<key<<", ServiceStatus is: "<<status<<std::endl;
+    std::cout <<"service Name is: " << key;
+    std::cout <<", ServiceStatus is: "<< status->status;
+    std::cout <<", pid is: "<< status->pid << std::endl;
 }
 
 HWTEST_F(ServiceWatcherModuleTest, serviceWatcher_test_001, TestSize.Level0)
@@ -65,4 +69,25 @@ HWTEST_F(ServiceWatcherModuleTest, serviceWatcher_test_002, TestSize.Level0)
     EXPECT_TRUE(status == "stopped");
     GTEST_LOG_(INFO) << "serviceWatcher_test_002 end";
 }
+
+HWTEST_F(ServiceWatcherModuleTest, serviceWatcher_test_003, TestSize.Level0)
+{
+    GTEST_LOG_(INFO) << "serviceWatcher_test_003 start";
+    const std::string serviceName = "deviceinfoservice";
+    // watcher service status
+    int ret = ServiceWatchForStatus(serviceName.c_str(), ServiceStatusChange);
+    EXPECT_EQ(ret, 0); // No matter if service exist or not, ServiceWatchForStatus always success.
+    // start service
+    char udid[65] = {}; // 65 udid len
+    ret = AclGetDevUdid(udid, sizeof(udid));
+    EXPECT_EQ(ret, 0);
+    auto status1 = GetServiceStatus(serviceName);
+    EXPECT_TRUE(status1 == "running");
+    // wait service exit
+    std::this_thread::sleep_for(std::chrono::seconds(80)); // wait sa died 80s
+    auto status2 = GetServiceStatus(serviceName);
+    EXPECT_TRUE(status2 == "stopped");
+
+    GTEST_LOG_(INFO) << "serviceWatcher_test_003 end";
+}
 }
diff --git a/test/moduletest/syspara_moduleTest.cpp b/test/moduletest/syspara_moduleTest.cpp
index e488d90fce94ec176e8268ba8b6159840afb1b18..a99f5a7e3cb4e11d6446d4ebe670ac83a55ec4f7 100644
--- a/test/moduletest/syspara_moduleTest.cpp
+++ b/test/moduletest/syspara_moduleTest.cpp
@@ -404,4 +404,45 @@ HWTEST_F(SysparaModuleTest, Syspara_GetParameter_test_011, TestSize.Level0)
 
     GTEST_LOG_(INFO) << "Syspara_GetParameter_test_011 end";
 }
+
+HWTEST_F(SysparaModuleTest, Syspara_CacheParameter_test_001, TestSize.Level0)
+{
+    GTEST_LOG_(INFO) << "Syspara_CacheParameter_test_001 start";
+
+    const char *name = "test.write.1111111.222222";
+    CachedHandle cacheHandle = CachedParameterCreate(name, "true");
+    EXPECT_NE(cacheHandle, nullptr);
+    const char *value = CachedParameterGet(cacheHandle);
+    EXPECT_EQ(strcmp(value, "true"), 0);
+    int ret = SetParameter(name, "false");
+    EXPECT_EQ(ret, 0);
+
+    value = CachedParameterGet(cacheHandle);
+    EXPECT_EQ(strcmp(value, "false"), 0);
+    CachedParameterDestroy(cacheHandle);
+
+    GTEST_LOG_(INFO) << "Syspara_CacheParameter_test_001 end";
+}
+
+HWTEST_F(SysparaModuleTest, Syspara_CacheParameter_test_002, TestSize.Level0)
+{
+    GTEST_LOG_(INFO) << "Syspara_CacheParameter_test_002 start";
+
+    const char *name = "test.write.1111111.333333";
+    int ret = SetParameter(name, "3333");
+    EXPECT_EQ(ret, 0);
+    CachedHandle cacheHandle3 = CachedParameterCreate(name, "true");
+    EXPECT_NE(cacheHandle3, nullptr);
+    const char *value = CachedParameterGet(cacheHandle3);
+    EXPECT_EQ(strcmp(value, "3333"), 0);
+
+    ret = SetParameter(name, "2222222");
+    EXPECT_EQ(ret, 0);
+    int valueChange = 0;
+    value = CachedParameterGetChanged(cacheHandle3, &valueChange);
+    EXPECT_EQ(strcmp(value, "2222222"), 0);
+    EXPECT_EQ(valueChange, 1);
+    CachedParameterDestroy(cacheHandle3);
+    GTEST_LOG_(INFO) << "Syspara_CacheParameter_test_002 end";
+}
 }
\ No newline at end of file
diff --git a/test/unittest/param/watcher_agent_unittest.cpp b/test/unittest/param/watcher_agent_unittest.cpp
index d06f2469f37841ed92b3740099cdf7f702372c1f..9a35fa29e9e659df8da1979ac920a5ae35453b51 100644
--- a/test/unittest/param/watcher_agent_unittest.cpp
+++ b/test/unittest/param/watcher_agent_unittest.cpp
@@ -42,9 +42,9 @@ static void TestParameterChange(const char *key, const char *value, void *contex
     g_callbackCount++;
 }
 
-static void TestWatcherCallBack(const char *key, ServiceStatus status)
+static void TestWatcherCallBack(const char *key, const ServiceInfo *status)
 {
-    printf("TestWatcherCallBack key:%s %d", key, status);
+    printf("TestWatcherCallBack key:%s %d", key, status->status);
 }
 
 class WatcherAgentUnitTest : public ::testing::Test {