diff --git a/en/device-dev/kernel/kernel-mini-basic-ipc-queue-guide.md b/en/device-dev/kernel/kernel-mini-basic-ipc-queue-guide.md
index 8a40c65f3f3e938f5c3ec2ed92ab830eaada5b69..723745dfa10904296c4da7e2eb3dd5ef39873996 100644
--- a/en/device-dev/kernel/kernel-mini-basic-ipc-queue-guide.md
+++ b/en/device-dev/kernel/kernel-mini-basic-ipc-queue-guide.md
@@ -131,8 +131,6 @@ VOID RecvEntry(VOID)
     CHAR readBuf[BUFFER_LEN] = {0};
     UINT32 readLen = BUFFER_LEN;
 
-   // Sleep for 1s.
-    usleep(1000000);
     ret = LOS_QueueReadCopy(g_queue, readBuf, &readLen, 0);
     if(ret != LOS_OK) {
         printf("recv message failure, error: %x\n", ret);
@@ -145,12 +143,12 @@ VOID RecvEntry(VOID)
         printf("delete the queue failure, error: %x\n", ret);
     }
 
-    printf("delete the queue success!\n");
+    printf("delete the queue success.\n");
 }
 
 UINT32 ExampleQueue(VOID)
 {
-    printf("start queue example\n");
+    printf("start queue example.\n");
     UINT32 ret = 0;
     UINT32 task1, task2;
     TSK_INIT_PARAM_S initParam = {0};
@@ -169,6 +167,7 @@ UINT32 ExampleQueue(VOID)
 
     initParam.pcName = "RecvQueue";
     initParam.pfnTaskEntry = (TSK_ENTRY_FUNC)RecvEntry;
+    initParam.usTaskPrio = 10;
     ret = LOS_TaskCreate(&task2, &initParam);
     if(ret != LOS_OK) {
         printf("create task2 failed, error: %x\n", ret);
@@ -180,7 +179,7 @@ UINT32 ExampleQueue(VOID)
         printf("create queue failure, error: %x\n", ret);
     }
 
-    printf("create the queue success!\n");
+    printf("create the queue success.\n");
     LOS_TaskUnlock();
     return ret;
 }
@@ -191,9 +190,9 @@ UINT32 ExampleQueue(VOID)
 The development is successful if the return result is as follows:
 
 ```
-start test example
-create the queue success!
-recv message: test message
-delete the queue success!
+start queue example.
+create the queue success.
+recv message: test message.
+delete the queue success.
 ```
 
diff --git a/en/device-dev/kernel/kernel-mini-basic-memory-dynamic.md b/en/device-dev/kernel/kernel-mini-basic-memory-dynamic.md
index cd9379dc05b2417bc77c026aa74ecb40663db2eb..78367b90d1a8779a3de345d6dd3fb42c6ac6841f 100644
--- a/en/device-dev/kernel/kernel-mini-basic-memory-dynamic.md
+++ b/en/device-dev/kernel/kernel-mini-basic-memory-dynamic.md
@@ -176,6 +176,9 @@ The sample code is as follows:
 ```
 #include "los_memory.h"
 
+#define TEST_POOL_SIZE (2*1024)
+__attribute__((aligned(4))) UINT8 g_testPool[TEST_POOL_SIZE];
+
 VOID Example_DynMem(VOID)
 {
     UINT32 *mem = NULL;
diff --git a/en/device-dev/kernel/kernel-mini-basic-soft-guide.md b/en/device-dev/kernel/kernel-mini-basic-soft-guide.md
index 41d1077832d0d7984f9ad7ad1dda3e385f1cfd1e..e322f99de263f69fbd64f8e8779efb31df0543c3 100644
--- a/en/device-dev/kernel/kernel-mini-basic-soft-guide.md
+++ b/en/device-dev/kernel/kernel-mini-basic-soft-guide.md
@@ -112,57 +112,58 @@ UINT32 g_timerCount2 = 0;
 /* Task ID*/
 UINT32 g_testTaskId01;
 
-void Timer1_Callback(UINT32 arg) //Callback function 1
+void Timer1_Callback(UINT32 arg) // Callback function 1
 {
     UINT32 tick_last1;
     g_timerCount1++;
-    tick_last1=(UINT32)LOS_TickCountGet(); //Obtain the current number of ticks.
+    tick_last1 = (UINT32)LOS_TickCountGet(); //Obtain the current number of ticks.
     printf("g_timerCount1=%d, tick_last1=%d\n", g_timerCount1, tick_last1);
 }  
 
-void Timer2_Callback(UINT32 arg) //Callback function 2
+void Timer2_Callback(UINT32 arg) // Callback function 2
 {
     UINT32 tick_last2;
-    tick_last2=(UINT32)LOS_TickCountGet();
+    tick_last2 = (UINT32)LOS_TickCountGet();
     g_timerCount2++;
     printf("g_timerCount2=%d tick_last2=%d\n", g_timerCount2, tick_last2);
 }  
 
 void Timer_example(void)  
 {
-    UINT32 id1; // timer id
-    UINT32 id2; // timer id
-    UINT32 uwTick;
+    UINT32 ret;
+    UINT32 id1; // timer id1
+    UINT32 id2; // timer id2
+    UINT32 tickCount;
 
     /* Create a one-shot software timer, with the number of ticks set to 1000. When the number of ticks reaches 1000, callback function 1 is executed. */
-    LOS_SwtmrCreate (1000, LOS_SWTMR_MODE_ONCE, Timer1_Callback, &id1, 1);
+    LOS_SwtmrCreate(1000, LOS_SWTMR_MODE_ONCE, Timer1_Callback, &id1, 1);
 
     /* Create a periodic software timer and execute callback function 2 every 100 ticks. */
     LOS_SwtmrCreate(100, LOS_SWTMR_MODE_PERIOD, Timer2_Callback, &id2, 1);
     printf("create Timer1 success\n");
 
-    LOS_SwtmrStart (id1); // Start the one-shot software timer.
-    printf("start Timer1 sucess\n");
+    LOS_SwtmrStart(id1); // Start the one-shot software timer.
+    printf("start Timer1 success\n");
 
     LOS_TaskDelay(200); // Delay 200 ticks.
-    LOS_SwtmrTimeGet(id1, &uwTick); // Obtain the number of remaining ticks of the one-short software timer.
-    printf("uwTick =%d\n", uwTick);
+    LOS_SwtmrTimeGet(id1, &tickCount); // Obtain the number of remaining ticks of the one-short software timer.
+    printf("tickCount=%d\n", tickCount);
 
     LOS_SwtmrStop(id1); // Stop the software timer.
-    printf("stop Timer1 sucess\n");
+    printf("stop Timer1 success\n");
 
     LOS_SwtmrStart(id1);
     LOS_TaskDelay(1000);
 
-    LOS_SwtmrDelete(id1); // Delete the software timer.
-    printf("delete Timer1 sucess\n");
-
     LOS_SwtmrStart(id2); // Start the periodic software timer.
     printf("start Timer2\n");
 
     LOS_TaskDelay(1000);
     LOS_SwtmrStop(id2);
-    LOS_SwtmrDelete(id2);
+    ret = LOS_SwtmrDelete(id2);  // Delete the software timer.
+    if (ret == LOS_OK) {
+        printf("delete Timer2 success\n");
+    }
 }
 
 UINT32 Example_TaskEntry(VOID)
@@ -170,11 +171,11 @@ UINT32 Example_TaskEntry(VOID)
     UINT32 ret;
     TSK_INIT_PARAM_S task1;
 
-    /* Lock task scheduling.*/
+    /* Lock task scheduling. */
     LOS_TaskLock();
 
-    /* Create task 1.*/
-    memset(&task1, 0, sizeof(TSK_INIT_PARAM_S));
+    /* Create task 1. */
+    (VOID)memset(&task1, 0, sizeof(TSK_INIT_PARAM_S));
     task1.pfnTaskEntry = (TSK_ENTRY_FUNC)Timer_example;
     task1.pcName       = "TimerTsk";
     task1.uwStackSize  = LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE;
@@ -185,7 +186,7 @@ UINT32 Example_TaskEntry(VOID)
         return LOS_NOK;
     }
 
-    /* Unlock task scheduling.*/
+    /* Unlock task scheduling. */
     LOS_TaskUnlock();
 
     return LOS_OK;
@@ -198,11 +199,10 @@ The output is as follows:
 
 ```
 create Timer1 success
-start Timer1 sucess
-uwTick =798
-stop Timer1 sucess
+start Timer1 success
+tickCount=798
+stop Timer1 success
 g_timerCount1=1, tick_last1=1208
-delete Timer1 sucess
 start Timer2
 g_timerCount2=1 tick_last2=1313
 g_timerCount2=2 tick_last2=1413
@@ -214,5 +214,6 @@ g_timerCount2=7 tick_last2=1913
 g_timerCount2=8 tick_last2=2013
 g_timerCount2=9 tick_last2=2113
 g_timerCount2=10 tick_last2=2213
+delete Timer2 success
 ```
 
diff --git a/zh-cn/device-dev/kernel/kernel-mini-basic-ipc-queue-guide.md b/zh-cn/device-dev/kernel/kernel-mini-basic-ipc-queue-guide.md
index 6c161853b669ecdd896c3a11cd01deb5d6bdf624..f68c614ebb27208dad6ed6cf445b2b629d09a067 100644
--- a/zh-cn/device-dev/kernel/kernel-mini-basic-ipc-queue-guide.md
+++ b/zh-cn/device-dev/kernel/kernel-mini-basic-ipc-queue-guide.md
@@ -131,8 +131,6 @@ VOID RecvEntry(VOID)
     CHAR readBuf[BUFFER_LEN] = {0};
     UINT32 readLen = BUFFER_LEN;
 
-    //休眠1s
-    usleep(1000000);
     ret = LOS_QueueReadCopy(g_queue, readBuf, &readLen, 0);
     if(ret != LOS_OK) {
         printf("recv message failure, error: %x\n", ret);
@@ -145,12 +143,12 @@ VOID RecvEntry(VOID)
         printf("delete the queue failure, error: %x\n", ret);
     }
 
-    printf("delete the queue success!\n");
+    printf("delete the queue success.\n");
 }
 
 UINT32 ExampleQueue(VOID)
 {
-    printf("start queue example\n");
+    printf("start queue example.\n");
     UINT32 ret = 0;
     UINT32 task1, task2;
     TSK_INIT_PARAM_S initParam = {0};
@@ -169,6 +167,7 @@ UINT32 ExampleQueue(VOID)
 
     initParam.pcName = "RecvQueue";
     initParam.pfnTaskEntry = (TSK_ENTRY_FUNC)RecvEntry;
+    initParam.usTaskPrio = 10;
     ret = LOS_TaskCreate(&task2, &initParam);
     if(ret != LOS_OK) {
         printf("create task2 failed, error: %x\n", ret);
@@ -180,7 +179,7 @@ UINT32 ExampleQueue(VOID)
         printf("create queue failure, error: %x\n", ret);
     }
 
-    printf("create the queue success!\n");
+    printf("create the queue success.\n");
     LOS_TaskUnlock();
     return ret;
 }
@@ -191,9 +190,9 @@ UINT32 ExampleQueue(VOID)
 编译运行得到的结果为：
 
 ```
-start test example
-create the queue success!
-recv message: test message
-delete the queue success!
+start queue example.
+create the queue success.
+recv message: test message.
+delete the queue success.
 ```
 
diff --git a/zh-cn/device-dev/kernel/kernel-mini-basic-memory-dynamic.md b/zh-cn/device-dev/kernel/kernel-mini-basic-memory-dynamic.md
index 276b11e3294c256a3ef269e5fb53425dabbf0446..d0f42d0cf38a94711470d5d8300e94a4071aa614 100644
--- a/zh-cn/device-dev/kernel/kernel-mini-basic-memory-dynamic.md
+++ b/zh-cn/device-dev/kernel/kernel-mini-basic-memory-dynamic.md
@@ -197,6 +197,9 @@ OpenHarmony LiteOS-M的动态内存管理主要为用户提供以下功能，接
 ```
 #include "los_memory.h"
 
+#define TEST_POOL_SIZE (2*1024)
+__attribute__((aligned(4))) UINT8 g_testPool[TEST_POOL_SIZE];
+
 VOID Example_DynMem(VOID)
 {
     UINT32 *mem = NULL;
diff --git a/zh-cn/device-dev/kernel/kernel-mini-basic-soft-guide.md b/zh-cn/device-dev/kernel/kernel-mini-basic-soft-guide.md
index 0e9f963c0c631b7b8b8284dfa4f16e54d1de273d..24ede40cf65308b044001a305706232ff0105224 100644
--- a/zh-cn/device-dev/kernel/kernel-mini-basic-soft-guide.md
+++ b/zh-cn/device-dev/kernel/kernel-mini-basic-soft-guide.md
@@ -116,53 +116,54 @@ void Timer1_Callback(UINT32 arg) // 回调函数1
 {
     UINT32 tick_last1;
     g_timerCount1++;
-    tick_last1=(UINT32)LOS_TickCountGet(); // 获取当前Tick数
+    tick_last1 = (UINT32)LOS_TickCountGet(); // 获取当前Tick数
     printf("g_timerCount1=%d, tick_last1=%d\n", g_timerCount1, tick_last1);
 }  
 
 void Timer2_Callback(UINT32 arg) // 回调函数2 
 {
     UINT32 tick_last2;
-    tick_last2=(UINT32)LOS_TickCountGet();
+    tick_last2 = (UINT32)LOS_TickCountGet();
     g_timerCount2++;
     printf("g_timerCount2=%d tick_last2=%d\n", g_timerCount2, tick_last2);
 }  
 
 void Timer_example(void)  
 {
-    UINT32 id1; // timer id
-    UINT32 id2; // timer id
-    UINT32 uwTick;
+    UINT32 ret;
+    UINT32 id1; // timer id1
+    UINT32 id2; // timer id2
+    UINT32 tickCount;
 
     /*创建单次软件定时器，Tick数为1000，启动到1000Tick数时执行回调函数1 */ 
-    LOS_SwtmrCreate (1000, LOS_SWTMR_MODE_ONCE, Timer1_Callback, &id1, 1);
+    LOS_SwtmrCreate(1000, LOS_SWTMR_MODE_ONCE, Timer1_Callback, &id1, 1);
 
     /*创建周期性软件定时器，每100Tick数执行回调函数2 */
     LOS_SwtmrCreate(100, LOS_SWTMR_MODE_PERIOD, Timer2_Callback, &id2, 1);
     printf("create Timer1 success\n");
 
-    LOS_SwtmrStart (id1); //启动单次软件定时器 
-    printf("start Timer1 sucess\n");
+    LOS_SwtmrStart(id1); //启动单次软件定时器 
+    printf("start Timer1 success\n");
 
     LOS_TaskDelay(200); //延时200Tick数
-    LOS_SwtmrTimeGet(id1, &uwTick); // 获得单次软件定时器剩余Tick数
-    printf("uwTick =%d\n", uwTick);
+    LOS_SwtmrTimeGet(id1, &tickCount); // 获得单次软件定时器剩余Tick数
+    printf("tickCount=%d\n", tickCount);
 
     LOS_SwtmrStop(id1); // 停止软件定时器
-    printf("stop Timer1 sucess\n");
+    printf("stop Timer1 success\n");
 
     LOS_SwtmrStart(id1);
     LOS_TaskDelay(1000);
 
-    LOS_SwtmrDelete(id1); // 删除软件定时器
-    printf("delete Timer1 sucess\n");
-
     LOS_SwtmrStart(id2); // 启动周期性软件定时器
     printf("start Timer2\n");
 
     LOS_TaskDelay(1000);
     LOS_SwtmrStop(id2);
-    LOS_SwtmrDelete(id2);
+    ret = LOS_SwtmrDelete(id2);  // 删除软件定时器
+    if (ret == LOS_OK) {
+        printf("delete Timer2 success\n");
+    }
 }
 
 UINT32 Example_TaskEntry(VOID)
@@ -174,7 +175,7 @@ UINT32 Example_TaskEntry(VOID)
     LOS_TaskLock();
 
     /* 创建任务1 */
-    memset(&task1, 0, sizeof(TSK_INIT_PARAM_S));
+    (VOID)memset(&task1, 0, sizeof(TSK_INIT_PARAM_S));
     task1.pfnTaskEntry = (TSK_ENTRY_FUNC)Timer_example;
     task1.pcName       = "TimerTsk";
     task1.uwStackSize  = LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE;
@@ -198,11 +199,10 @@ UINT32 Example_TaskEntry(VOID)
 
 ```
 create Timer1 success
-start Timer1 sucess
-uwTick =798
-stop Timer1 sucess
+start Timer1 success
+tickCount=798
+stop Timer1 success
 g_timerCount1=1, tick_last1=1208
-delete Timer1 sucess
 start Timer2
 g_timerCount2=1 tick_last2=1313
 g_timerCount2=2 tick_last2=1413
@@ -214,5 +214,6 @@ g_timerCount2=7 tick_last2=1913
 g_timerCount2=8 tick_last2=2013
 g_timerCount2=9 tick_last2=2113
 g_timerCount2=10 tick_last2=2213
+delete Timer2 success
 ```