diff --git a/components/debugtools/BUILD.gn b/components/debugtools/BUILD.gn
index 3a79bcc9..5ff7d865 100644
--- a/components/debugtools/BUILD.gn
+++ b/components/debugtools/BUILD.gn
@@ -33,6 +33,7 @@ module_name = get_path_info(rebase_path("."), "name")
 kernel_module(module_name) {
   sources = [
     "los_hwidump.c",
+    "los_schedtrace.c",
     "los_stackdump.c",
   ]
   configs += [ "$LITEOSTOPDIR:warn_config" ]
diff --git a/components/debugtools/los_debugtools.h b/components/debugtools/los_debugtools.h
index de03c64b..231e63a7 100644
--- a/components/debugtools/los_debugtools.h
+++ b/components/debugtools/los_debugtools.h
@@ -40,17 +40,46 @@ extern "C" {
 #endif /* __cplusplus */
 #endif /* __cplusplus */
 
+
+/* StackDump print format */
 #define PRINT_PER_ROW  4
 
-/* Shell Callback */
+/* SchedTrace records number */
+#define TRACE_NUM   200
+
+/* sched trace info, users can add their own */
+typedef struct {
+    UINT32 newTaskID;
+    CHAR newTaskName[LOS_TASK_NAMELEN];
+    UINT32 runTaskID;
+    CHAR runTaskName[LOS_TASK_NAMELEN];
+} SchedTraceInfo;
+
+/* SchedTrace record callback */
+typedef void (*SchedTraceRecordCB)(LosTaskCB *newTask, LosTaskCB *runTask);
+
+/* SchedTrace show callback, buf is overwrite ringbuf, max amount of storage is TRACE_NUM */
+typedef void (*SchedTraceShowCB)(SchedTraceInfo *ringBuf, UINT32 count);
+
+/* Shell callback */
 extern UINT32 OsShellCmdStackDump(INT32 argc, const CHAR **argv);
 extern UINT32 OsShellCmdHwiDump(INT32 argc, const CHAR **argv);
+extern UINT32 OsShellCmdSchedTrace(INT32 argc, const CHAR **argv);
 
-/* other module Callback */
+/* Other module callback */
+extern VOID OsSchedTraceRecord(LosTaskCB *newTask, LosTaskCB *runTask);
 
-/* External Interface */
+/* External interface */
+/* dump stack by task id, can be called at any time */
 extern VOID LOS_TaskStackDump(UINT32 taskID);
 
+/* register sched trace handle, If not registered, the default fun will be used */
+extern VOID LOS_SchedTraceHandleRegister(SchedTraceRecordCB recordCB, SchedTraceShowCB showCB);
+/* start sched trace, will alloc buf, and start write to buf when sched */
+extern VOID LOS_SchedTraceStart(VOID);
+/* stop sched trace, will stop record and free buf */
+extern VOID LOS_SchedTraceStop(VOID);
+
 #ifdef __cplusplus
 #if __cplusplus
 }
diff --git a/components/debugtools/los_schedtrace.c b/components/debugtools/los_schedtrace.c
new file mode 100644
index 00000000..7de17e59
--- /dev/null
+++ b/components/debugtools/los_schedtrace.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "los_debugtools.h"
+#include "securec.h"
+#include "los_debug.h"
+#include "los_memory.h"
+#include "los_arch.h"
+
+#if (LOSCFG_DEBUG_TOOLS == 1)
+STATIC BOOL g_startTrace = FALSE;
+STATIC SchedTraceInfo *g_traceRingBuf = NULL;
+STATIC UINT32 g_schedCount = 0;
+STATIC SchedTraceRecordCB g_recordCB = NULL;
+STATIC SchedTraceShowCB g_showCB = NULL;
+
+STATIC VOID DefaultShowFormat(SchedTraceInfo *buf, UINT32 count)
+{
+    INT32 i;
+    UINT32 cycle = count / TRACE_NUM;
+    UINT32 point = count % TRACE_NUM;
+
+    PRINTK ("sched %u time, last %u is:\r\n", count, TRACE_NUM);
+    PRINTK("RunTaskID     RunTaskName      NewTaskID    NewTaskName  \r\n");
+    if (cycle > 0) {
+        for (i = point; i < TRACE_NUM; i++) {
+            PRINTK("%4u %20s,  %4u %20s\n",
+                   g_traceRingBuf[i].runTaskID, g_traceRingBuf[i].runTaskName,
+                   g_traceRingBuf[i].newTaskID, g_traceRingBuf[i].newTaskName);
+        }
+    }
+
+    for (i = 0; i < point; i++) {
+        PRINTK("%4u %20s,  %4u %20s\n",
+               g_traceRingBuf[i].runTaskID, g_traceRingBuf[i].runTaskName,
+               g_traceRingBuf[i].newTaskID, g_traceRingBuf[i].newTaskName);
+    }
+
+    PRINTK("\r\n");
+}
+
+STATIC VOID DefaultRecordHandle(LosTaskCB *newTask, LosTaskCB *runTask)
+{
+    UINT32 point = g_schedCount % TRACE_NUM;
+
+    g_traceRingBuf[point].newTaskID = newTask->taskID;
+    (VOID)memcpy_s(g_traceRingBuf[point].newTaskName, LOS_TASK_NAMELEN, newTask->taskName, LOS_TASK_NAMELEN);
+    g_traceRingBuf[point].runTaskID = runTask->taskID;
+    (VOID)memcpy_s(g_traceRingBuf[point].runTaskName, LOS_TASK_NAMELEN, runTask->taskName, LOS_TASK_NAMELEN);
+
+    g_schedCount++;
+}
+
+STATIC VOID ShowFormat(SchedTraceInfo *buf, UINT32 count)
+{
+    if (count == 0) {
+        PRINT_ERR("none shed happend\n");
+        return;
+    }
+
+    if (g_showCB != NULL) {
+        g_showCB(buf, count);
+    }
+}
+
+VOID OsSchedTraceRecord(LosTaskCB *newTask, LosTaskCB *runTask)
+{
+    if (g_startTrace == FALSE) {
+        return;
+    }
+
+    if (g_recordCB != NULL) {
+        g_recordCB(newTask, runTask);
+    }
+}
+
+VOID LOS_SchedTraceStart(VOID)
+{
+    if (g_recordCB == NULL) {
+        g_recordCB = DefaultRecordHandle;
+    }
+
+    g_traceRingBuf = (SchedTraceInfo *)LOS_MemAlloc(OS_SYS_MEM_ADDR, TRACE_NUM * sizeof(SchedTraceInfo));
+    if (g_traceRingBuf == NULL) {
+        PRINT_ERR("alloc failed for dump\n");
+        return;
+    }
+    (VOID)memset_s(g_traceRingBuf, TRACE_NUM * sizeof(SchedTraceInfo), 0, TRACE_NUM * sizeof(SchedTraceInfo));
+
+    g_startTrace = TRUE;
+}
+
+VOID LOS_SchedTraceStop(VOID)
+{
+    if (g_showCB == NULL) {
+        g_showCB = DefaultShowFormat;
+    }
+    g_startTrace = FALSE;
+    ShowFormat(g_traceRingBuf, g_schedCount);
+    g_schedCount = 0;
+
+    (VOID)LOS_MemFree(OS_SYS_MEM_ADDR, g_traceRingBuf);
+    g_traceRingBuf = NULL;
+
+    return;
+}
+
+VOID LOS_SchedTraceHandleRegister(SchedTraceRecordCB recordCB, SchedTraceShowCB showCB)
+{
+    g_recordCB = recordCB;
+    g_showCB = showCB;
+}
+
+UINT32 OsShellCmdSchedTrace(INT32 argc, const CHAR **argv)
+{
+    if (argc != 1) {
+        PRINT_ERR("\nUsage: st -h\n");
+        return LOS_NOK;
+    }
+
+    if (strcmp(argv[0], "-s") == 0) {
+        LOS_SchedTraceStart();
+    } else if (strcmp(argv[0], "-e") == 0) {
+        LOS_SchedTraceStop();
+    } else if (strcmp(argv[0], "-h") == 0) {
+        PRINTK("\nUsage: \nst -s , SchedTrace start\n");
+        PRINTK("st -e , SchedTrace end and show\n");
+    } else {
+        PRINTK("\nUsage: st -h\n");
+        return OS_ERROR;
+    }
+
+    return LOS_OK;
+}
+#endif /* LOSCFG_STACK_DUMP == 1 */
diff --git a/components/shell/src/base/shcmd.c b/components/shell/src/base/shcmd.c
index 48b5ff73..1bd0e48f 100644
--- a/components/shell/src/base/shcmd.c
+++ b/components/shell/src/base/shcmd.c
@@ -69,6 +69,7 @@ CmdItem g_shellcmdAll[] = {
 #if (LOSCFG_DEBUG_TOOLS == 1)
     {CMD_TYPE_EX, "stack", 1, (CmdCallBackFunc)OsShellCmdStackDump},
     {CMD_TYPE_EX, "hwi", 1, (CmdCallBackFunc)OsShellCmdHwiDump},
+    {CMD_TYPE_EX, "st", 1, (CmdCallBackFunc)OsShellCmdSchedTrace},
 #endif
     {CMD_TYPE_EX, "help", 0, (CmdCallBackFunc)OsShellCmdHelp},
 };
diff --git a/kernel/src/los_sched.c b/kernel/src/los_sched.c
index cb72e290..25ffe9d8 100644
--- a/kernel/src/los_sched.c
+++ b/kernel/src/los_sched.c
@@ -38,6 +38,9 @@
 #if (LOSCFG_KERNEL_PM == 1)
 #include "los_pm.h"
 #endif
+#if (LOSCFG_DEBUG_TOOLS == 1)
+#include "los_debugtools.h"
+#endif
 
 #ifdef __cplusplus
 #if __cplusplus
@@ -547,6 +550,9 @@ BOOL OsSchedTaskSwitch(VOID)
         isTaskSwitch = TRUE;
 
         OsHookCall(LOS_HOOK_TYPE_TASK_SWITCHEDIN);
+#if (LOSCFG_DEBUG_TOOLS == 1)
+        OsSchedTraceRecord(newTask, runTask);
+#endif
     }
 
     OsSchedTaskDeQueue(newTask);