diff --git a/doc/4.TencentOS-tiny开发指南.md b/doc/4.TencentOS-tiny开发指南.md
index d46822fe..d0fb364b 100644
--- a/doc/4.TencentOS-tiny开发指南.md
+++ b/doc/4.TencentOS-tiny开发指南.md
@@ -1447,7 +1447,7 @@ int main(void)
     board_init();
     tos_knl_init();
     // 配置robin机制参数
-    tos_robin_config(TOS_ROBIN_STATE_ENABLED, (k_timeslice_t)500u);
+    tos_robin_default_timeslice_config((k_timeslice_t)500u);
     (void)tos_task_create(&task_demo1, "demo1", entry_task_demo1, NULL,
                             PRIO_TASK_DEMO, stack_task_demo1, STK_SIZE_TASK_DEMO,
                             timeslice_demo1);
diff --git a/doc/code/2.7 robin/main.c b/doc/code/2.7 robin/main.c
index 93249eb8..c511f8f5 100644
--- a/doc/code/2.7 robin/main.c	
+++ b/doc/code/2.7 robin/main.c	
@@ -56,7 +56,7 @@ int main(void)
 {
     board_init();
     tos_knl_init();
-    tos_robin_config(TOS_ROBIN_STATE_ENABLED, (k_timeslice_t)500u);
+    tos_robin_default_timeslice_config((k_timeslice_t)500u);
     (void)tos_task_create(&task_demo1, "demo1", entry_task_demo1, NULL,
                             PRIO_TASK_DEMO, stack_task_demo1, STK_SIZE_TASK_DEMO,
                             timeslice_demo1);
diff --git a/kernel/core/include/tos_global.h b/kernel/core/include/tos_global.h
index 9193d51c..7fa01b8e 100644
--- a/kernel/core/include/tos_global.h
+++ b/kernel/core/include/tos_global.h
@@ -49,7 +49,6 @@ extern k_mmheap_ctl_t       k_mmheap_ctl;
 
 #if TOS_CFG_ROUND_ROBIN_EN > 0u
 extern k_timeslice_t        k_robin_default_timeslice;
-extern k_robin_state_t      k_robin_state;
 #endif
 
 #if TOS_CFG_TIMER_EN > 0u
diff --git a/kernel/core/include/tos_robin.h b/kernel/core/include/tos_robin.h
index f6678b67..91bdaae0 100644
--- a/kernel/core/include/tos_robin.h
+++ b/kernel/core/include/tos_robin.h
@@ -3,11 +3,6 @@
 
 #if TOS_CFG_ROUND_ROBIN_EN > 0u
 
-typedef enum k_robin_state_en {
-    TOS_ROBIN_STATE_ENABLED,
-    TOS_ROBIN_STATE_DISABLED,
-} k_robin_state_t;
-
 /**
  * @brief Set time slice.
  * Set time slice of a task.
@@ -32,7 +27,7 @@ __API__ void    tos_robin_timeslice_set(k_task_t *task, k_timeslice_t timeslice)
  *
  * @return  None
  */
-__API__ void    tos_robin_config(k_robin_state_t robin_state, k_timeslice_t default_timeslice);
+__API__ void    tos_robin_default_timeslice_config(k_timeslice_t default_timeslice);
 
 __KERNEL__ void robin_sched(k_prio_t prio);
 
diff --git a/kernel/core/tos_global.c b/kernel/core/tos_global.c
index e0b8f53a..5cedc45a 100644
--- a/kernel/core/tos_global.c
+++ b/kernel/core/tos_global.c
@@ -32,7 +32,6 @@ k_mmheap_ctl_t      k_mmheap_ctl;
 
 #if TOS_CFG_ROUND_ROBIN_EN > 0u
 k_timeslice_t       k_robin_default_timeslice       = TOS_CFG_CPU_TICK_PER_SECOND / 10;
-k_robin_state_t     k_robin_state                   = TOS_ROBIN_STATE_DISABLED;
 #endif
 
 #if TOS_CFG_TIMER_EN > 0u
diff --git a/kernel/core/tos_robin.c b/kernel/core/tos_robin.c
index 0e0d39f5..b99b9c23 100644
--- a/kernel/core/tos_robin.c
+++ b/kernel/core/tos_robin.c
@@ -2,18 +2,18 @@
 
 #if TOS_CFG_ROUND_ROBIN_EN > 0u
 
-__API__ void tos_robin_config(k_robin_state_t robin_state, k_timeslice_t default_timeslice)
+__API__ void tos_robin_default_timeslice_config(k_timeslice_t default_timeslice)
 {
     TOS_CPU_CPSR_ALLOC();
-    TOS_CPU_INT_DISABLE();
 
-    k_robin_state = robin_state;
+    TOS_CPU_INT_DISABLE();
 
     if (default_timeslice > (k_timeslice_t)0u) {
         k_robin_default_timeslice = default_timeslice;
     } else {
         k_robin_default_timeslice = TOS_CFG_CPU_TICK_PER_SECOND / 10;
     }
+
     TOS_CPU_INT_ENABLE();
 }
 
@@ -44,10 +44,6 @@ __KERNEL__ void robin_sched(k_prio_t prio)
     TOS_CPU_CPSR_ALLOC();
     k_task_t *task;
 
-    if (k_robin_state != TOS_ROBIN_STATE_ENABLED) {
-        return;
-    }
-
     TOS_CPU_INT_DISABLE();
 
     task = readyqueue_first_task_get(prio);
diff --git a/test/suit_robin.c b/test/suit_robin.c
index b762e7ae..6f078d8c 100644
--- a/test/suit_robin.c
+++ b/test/suit_robin.c
@@ -34,7 +34,7 @@ TEST test_robin(void)
     int test_count = 0;
     const double deviation = 0.1;
 
-    tos_robin_config(TOS_ROBIN_STATE_ENABLED, (k_timeslice_t)500u);
+    tos_robin_default_timeslice_config((k_timeslice_t)500u);
     err = tos_task_create(&test_task_00, "test_task_00", test_robin_task_00_entry,
                             NULL, k_curr_task->prio + 1,
                             test_task_stack_00, sizeof(test_task_stack_00),