diff --git a/bsp/avr32uc3b0/startup.c b/bsp/avr32uc3b0/startup.c
index efa76a4e27..920b8c7901 100644
--- a/bsp/avr32uc3b0/startup.c
+++ b/bsp/avr32uc3b0/startup.c
@@ -38,7 +38,9 @@ int main(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device(FINSH_DEVICE_NAME);
+#endif
 #endif
 
     rt_thread_idle_init();
diff --git a/bsp/bf533/startup.c b/bsp/bf533/startup.c
index a56b123035..3f128b28f9 100644
--- a/bsp/bf533/startup.c
+++ b/bsp/bf533/startup.c
@@ -62,7 +62,9 @@ void rtthread_startup(void)
     /* init finsh */
     extern int finsh_system_init(void);
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart0");
+#endif
 #endif
 
     rt_system_timer_thread_init();
diff --git a/bsp/efm32/startup.c b/bsp/efm32/startup.c
index d769bbf99c..02c0d949fd 100644
--- a/bsp/efm32/startup.c
+++ b/bsp/efm32/startup.c
@@ -111,7 +111,9 @@ void rtthread_startup(void)
     /* init finsh */
 #ifdef RT_USING_FINSH
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device(CONSOLE_DEVICE);
+#endif
 #endif
 
     /* Initialize gui server */
diff --git a/bsp/frdm-k64f/applications/startup.c b/bsp/frdm-k64f/applications/startup.c
index e558cd8cbf..3eb8003917 100644
--- a/bsp/frdm-k64f/applications/startup.c
+++ b/bsp/frdm-k64f/applications/startup.c
@@ -79,7 +79,9 @@ void rtthread_startup(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device( FINSH_DEVICE_NAME );
+#endif
 #endif
 
     /* init timer thread */
diff --git a/bsp/juicevm/rtconfig.h b/bsp/juicevm/rtconfig.h
index b2f2cfde3d..b2b72b8f45 100755
--- a/bsp/juicevm/rtconfig.h
+++ b/bsp/juicevm/rtconfig.h
@@ -106,7 +106,6 @@
 /* POSIX layer and C standard library */
 
 #define RT_USING_LIBC
-// #define RT_USING_POSIX
 
 /* Network */
 
diff --git a/bsp/lm3s8962/applications/startup.c b/bsp/lm3s8962/applications/startup.c
index 2d8e55b554..b4e1239d10 100644
--- a/bsp/lm3s8962/applications/startup.c
+++ b/bsp/lm3s8962/applications/startup.c
@@ -119,7 +119,7 @@ void rtthread_startup(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
-#if !defined(RT_USING_POSIX) && defined(RT_USING_DEVICE)
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart1");
 #endif
 #endif
diff --git a/bsp/lm3s9b9x/applications/startup.c b/bsp/lm3s9b9x/applications/startup.c
index 8d261d0036..3ca6c5b348 100644
--- a/bsp/lm3s9b9x/applications/startup.c
+++ b/bsp/lm3s9b9x/applications/startup.c
@@ -119,7 +119,7 @@ void rtthread_startup(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
-#ifdef RT_USING_DEVICE
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart1");
 #endif
 #endif
diff --git a/bsp/lm4f232/applications/startup.c b/bsp/lm4f232/applications/startup.c
index ed16b60a50..8b04de0d32 100644
--- a/bsp/lm4f232/applications/startup.c
+++ b/bsp/lm4f232/applications/startup.c
@@ -119,7 +119,7 @@ void rtthread_startup(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
-#ifdef RT_USING_DEVICE
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart1");
 #endif
 #endif
diff --git a/bsp/lpc43xx/M0/applications/application.c b/bsp/lpc43xx/M0/applications/application.c
index 1b14f82cd7..4194c039e8 100644
--- a/bsp/lpc43xx/M0/applications/application.c
+++ b/bsp/lpc43xx/M0/applications/application.c
@@ -28,8 +28,10 @@ void rt_init_thread_entry(void *parameter)
 #ifdef RT_USING_FINSH
     /* initialize finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device(RT_CONSOLE_DEVICE_NAME);
 #endif
+#endif
 
 #ifdef RT_USING_VBUS
     rt_vbus_do_init();
diff --git a/bsp/lpc43xx/M4/applications/application.c b/bsp/lpc43xx/M4/applications/application.c
index 03e56fa955..a35c5862f4 100644
--- a/bsp/lpc43xx/M4/applications/application.c
+++ b/bsp/lpc43xx/M4/applications/application.c
@@ -59,8 +59,10 @@ void rt_init_thread_entry(void *parameter)
 #ifdef RT_USING_FINSH
     /* initialize finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device(RT_CONSOLE_DEVICE_NAME);
 #endif
+#endif
 
 #ifdef RT_USING_VBUS
     rt_vbus_do_init();
diff --git a/bsp/m16c62p/applications/startup.c b/bsp/m16c62p/applications/startup.c
index 149e530892..907ec1cd20 100644
--- a/bsp/m16c62p/applications/startup.c
+++ b/bsp/m16c62p/applications/startup.c
@@ -65,7 +65,9 @@ void rtthread_startup(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart0");
+#endif
 #endif
 
     /* init timer thread */
diff --git a/bsp/mb9bf568r/applications/application.c b/bsp/mb9bf568r/applications/application.c
index e5d2b55950..677e9c91a5 100644
--- a/bsp/mb9bf568r/applications/application.c
+++ b/bsp/mb9bf568r/applications/application.c
@@ -25,8 +25,9 @@ void rt_init_thread_entry(void *parameter)
 
 
     //finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device(RT_CONSOLE_DEVICE_NAME);
-
+#endif
 
     /**< init led device */
     {
diff --git a/bsp/mb9bf618s/applications/application.c b/bsp/mb9bf618s/applications/application.c
index 5e7c265450..737034fff6 100644
--- a/bsp/mb9bf618s/applications/application.c
+++ b/bsp/mb9bf618s/applications/application.c
@@ -24,7 +24,7 @@ void rt_init_thread_entry(void *parameter)
 #endif
 
 #ifdef  RT_USING_FINSH
-    finsh_set_device(RT_CONSOLE_DEVICE_NAME);
+    (RT_CONSOLE_DEVICE_NAME);
 #endif  /* RT_USING_FINSH */
 
     /**< init led device */
diff --git a/bsp/microblaze/startup.c b/bsp/microblaze/startup.c
index e1104a4cd5..dec74de918 100755
--- a/bsp/microblaze/startup.c
+++ b/bsp/microblaze/startup.c
@@ -84,7 +84,9 @@ void rtthread_startup(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart1");
+#endif
 #endif
 
     /* init idle thread */
diff --git a/bsp/mini4020/applications/startup.c b/bsp/mini4020/applications/startup.c
index 4d07a8edd7..0feba225cf 100644
--- a/bsp/mini4020/applications/startup.c
+++ b/bsp/mini4020/applications/startup.c
@@ -77,7 +77,7 @@ void rtthread_startup()
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
-#ifdef RT_USING_DEVICE
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart0");
 #endif
 #endif
diff --git a/bsp/nios_ii/startup.c b/bsp/nios_ii/startup.c
index fd2f909aa2..aa6df54c3a 100644
--- a/bsp/nios_ii/startup.c
+++ b/bsp/nios_ii/startup.c
@@ -60,7 +60,9 @@ void rtthread_startup(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart");
+#endif
 #endif
 
     /* init idle thread */
diff --git a/bsp/nv32f100x/app/src/main.c b/bsp/nv32f100x/app/src/main.c
index 813878bc9f..4145900aa3 100644
--- a/bsp/nv32f100x/app/src/main.c
+++ b/bsp/nv32f100x/app/src/main.c
@@ -17,8 +17,10 @@ int main(void)
 {
     rt_thread_t thread;
 
-#ifdef  RT_USING_FINSH
+#ifdef RT_USING_FINSH
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device(RT_CONSOLE_DEVICE_NAME);
+#endif
 #endif
 
     /* Create led thread */
diff --git a/bsp/pic32ethernet/startup.c b/bsp/pic32ethernet/startup.c
index 372440d711..8c8772a4a7 100644
--- a/bsp/pic32ethernet/startup.c
+++ b/bsp/pic32ethernet/startup.c
@@ -48,7 +48,7 @@ void rtthread_startup(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
-#ifdef RT_USING_DEVICE
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart1");
 #endif
 #endif
diff --git a/bsp/rm48x50/application/startup.c b/bsp/rm48x50/application/startup.c
index a49c9f1810..cbcc9b19ca 100644
--- a/bsp/rm48x50/application/startup.c
+++ b/bsp/rm48x50/application/startup.c
@@ -104,7 +104,9 @@ void rtthread_startup(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("sci2");
+#endif
 #endif
 
     /* init soft timer thread */
diff --git a/bsp/rx/applications/application.c b/bsp/rx/applications/application.c
index 2013a3c69a..eb3053174b 100644
--- a/bsp/rx/applications/application.c
+++ b/bsp/rx/applications/application.c
@@ -60,8 +60,10 @@ void rt_init_thread_entry(void* parameter)
 #ifdef RT_USING_FINSH
 	/* initialize finsh */
 	finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
 	finsh_set_device(RT_CONSOLE_DEVICE_NAME);
 #endif
+#endif
 
 #ifdef RT_USING_LWIP
 	/* initialize lwip stack */
@@ -130,7 +132,9 @@ void rt_init_thread_entry(void* parameter)
 #endif
 
 #ifdef  RT_USING_FINSH
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device(RT_CONSOLE_DEVICE_NAME);
+#endif
 #endif  /* RT_USING_FINSH */
 
     /* Filesystem Initialization */
diff --git a/bsp/sam7x/applications/startup.c b/bsp/sam7x/applications/startup.c
index 528d6127f3..bc3e8f5ad3 100644
--- a/bsp/sam7x/applications/startup.c
+++ b/bsp/sam7x/applications/startup.c
@@ -114,7 +114,9 @@ void rtthread_startup(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart1");
+#endif
 #endif
 
     /* init idle thread */
diff --git a/bsp/samd21/applications/application.c b/bsp/samd21/applications/application.c
index d311cb23fc..6bb3c7d24e 100644
--- a/bsp/samd21/applications/application.c
+++ b/bsp/samd21/applications/application.c
@@ -87,7 +87,9 @@ void rt_init_thread_entry(void* parameter)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart1");
+#endif
 #endif
 
     LED_Init();
diff --git a/bsp/sep6200/application/startup.c b/bsp/sep6200/application/startup.c
index 0d67f08256..4ecacf560f 100644
--- a/bsp/sep6200/application/startup.c
+++ b/bsp/sep6200/application/startup.c
@@ -64,7 +64,7 @@ void rtthread_startup()
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
-#ifdef RT_USING_DEVICE
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart0");
 #endif
 #endif
diff --git a/bsp/taihu/applications/startup.c b/bsp/taihu/applications/startup.c
index 299a2867e6..7812af03aa 100644
--- a/bsp/taihu/applications/startup.c
+++ b/bsp/taihu/applications/startup.c
@@ -53,7 +53,9 @@ void rtthread_startup(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart1");
+#endif
 #endif
 
     /* init soft timer thread */
diff --git a/bsp/upd70f3454/applications/startup.c b/bsp/upd70f3454/applications/startup.c
index 9a9ed22cde..990112dfa8 100644
--- a/bsp/upd70f3454/applications/startup.c
+++ b/bsp/upd70f3454/applications/startup.c
@@ -64,7 +64,9 @@ void rtthread_startup(void)
 #ifdef RT_USING_FINSH
     /* init finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device("uart0");
+#endif
 #endif
 
     /* init timer thread */
diff --git a/bsp/xplorer4330/applications/application.c b/bsp/xplorer4330/applications/application.c
index 707be03de8..98f1874c0d 100644
--- a/bsp/xplorer4330/applications/application.c
+++ b/bsp/xplorer4330/applications/application.c
@@ -23,8 +23,10 @@ void rt_init_thread_entry(void *parameter)
 #ifdef RT_USING_FINSH
     /* initialize finsh */
     finsh_system_init();
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
     finsh_set_device(RT_CONSOLE_DEVICE_NAME);
 #endif
+#endif
 }
 /*the led thread*/
 ALIGN(RT_ALIGN_SIZE)
diff --git a/components/finsh/finsh.h b/components/finsh/finsh.h
index f5e4df9e49..865627fd79 100644
--- a/components/finsh/finsh.h
+++ b/components/finsh/finsh.h
@@ -168,7 +168,7 @@ extern struct finsh_syscall *_syscall_table_begin, *_syscall_table_end;
 /* find out system call, which should be implemented in user program */
 struct finsh_syscall *finsh_syscall_lookup(const char *name);
 
-#ifdef RT_USING_DEVICE
+#if !defined(RT_USING_POSIX_DEVIO) && defined(RT_USING_DEVICE)
 void finsh_set_device(const char *device_name);
 #endif
 
diff --git a/components/finsh/shell.h b/components/finsh/shell.h
index ca1ec308ed..0c20ba60dd 100644
--- a/components/finsh/shell.h
+++ b/components/finsh/shell.h
@@ -91,7 +91,6 @@ void finsh_set_echo(rt_uint32_t echo);
 rt_uint32_t finsh_get_echo(void);
 
 int finsh_system_init(void);
-void finsh_set_device(const char *device_name);
 const char *finsh_get_device(void);
 int finsh_getchar(void);