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/en/device-dev/kernel/kernel-mini-basic-task-basic.md b/en/device-dev/kernel/kernel-mini-basic-task-basic.md
index 0f3d463a36c052bb432d048716ad7d5c556ff92c..fa4e6853cce145a79aad98515dd8d288d25b6bfa 100644
--- a/en/device-dev/kernel/kernel-mini-basic-task-basic.md
+++ b/en/device-dev/kernel/kernel-mini-basic-task-basic.md
@@ -39,7 +39,7 @@ The task transition process is as follows:
 
 -   Running → Blocked
 
-    When a running task is blocked \(suspended, delayed, or reading semaphores\), it will be deleted from the Ready queue and changes from the Running state to the Blocked state. Then, task switching is triggered to run the task with the highest priority in the Ready queue.
+    When a running task is blocked \(suspended, delayed, or reading semaphores\), it will be inserted into the corresponding blocking queue and changes from the Running state to the Blocked state. Then, task switching is triggered to run the task with the highest priority in the Ready queue.
 
 -   Blocked → Ready \(Blocked → Running\)
 
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
 ```
 
diff --git a/zh-cn/device-dev/kernel/kernel-mini-basic-task-basic.md b/zh-cn/device-dev/kernel/kernel-mini-basic-task-basic.md
index 074596f401185126a3ea5701b115aba2887cebcf..a9a5a554cfc7b392e1c36bc3ecf24fa8cf6e8b95 100644
--- a/zh-cn/device-dev/kernel/kernel-mini-basic-task-basic.md
+++ b/zh-cn/device-dev/kernel/kernel-mini-basic-task-basic.md
@@ -39,7 +39,7 @@ OpenHarmony LiteOS-M的任务模块可以给用户提供多个任务，实现任
 
 -   运行态→阻塞态
 
-    正在运行的任务发生阻塞（挂起、延时、读信号量等）时，该任务会从就绪队列中删除，任务状态由运行态变成阻塞态，然后发生任务切换，运行就绪队列中最高优先级任务。
+    正在运行的任务发生阻塞（挂起、延时、读信号量等）时，将该任务插入到对应的阻塞队列中，任务状态由运行态变成阻塞态，然后发生任务切换，运行就绪队列中最高优先级任务。
 
 -   阻塞态→就绪态（阻塞态→运行态）