diff --git a/Ubiquitous/XiZi_IIoT/Makefile b/Ubiquitous/XiZi_IIoT/Makefile
index 9e8745526..08e117018 100755
--- a/Ubiquitous/XiZi_IIoT/Makefile
+++ b/Ubiquitous/XiZi_IIoT/Makefile
@@ -5,7 +5,7 @@ MAKEFLAGS += --no-print-directory
 .PHONY:COMPILE_APP COMPILE_KERNEL
 
 
-riscv_support := kd233 maix-go hifive1-rev-B gapuino gd32vf103-rvstar rv32m1-vega aiit-riscv64-board xidatong-riscv64 edu-riscv64 ch32v307vct6
+riscv_support := kd233 maix-go hifive1-rev-B gapuino gd32vf103-rvstar rv32m1-vega aiit-riscv64-board xidatong-riscv64 edu-riscv64 ch32v307vct6 ch32v208rbt6
 arm_support += stm32f407-st-discovery stm32f407zgt6 stm32f103-nano nuvoton-m2354 ok1052-c imxrt1176-sbc aiit-arm32-board xidatong-arm32 xiwangtong-arm32 edu-arm32 xishutong-arm32 rzv2l-m33 rzg2ul-m33
 emulator_support += hifive1-emulator k210-emulator cortex-m0-emulator cortex-m3-emulator cortex-m4-emulator cortex-m7-emulator
 
diff --git a/Ubiquitous/XiZi_IIoT/arch/risc-v/Makefile b/Ubiquitous/XiZi_IIoT/arch/risc-v/Makefile
index 15102d3d5..15453583e 100755
--- a/Ubiquitous/XiZi_IIoT/arch/risc-v/Makefile
+++ b/Ubiquitous/XiZi_IIoT/arch/risc-v/Makefile
@@ -2,6 +2,10 @@ ifeq ($(CONFIG_BOARD_CH32V307VCT6), )
 SRC_DIR :=  shared
 endif
 
+ifeq ($(CONFIG_BOARD_CH32V208RBT6), )
+SRC_DIR := shared
+endif
+
 ifeq ($(CONFIG_BOARD_FE310_EVB),y)
 SRC_DIR +=fe310
 endif
@@ -37,6 +41,10 @@ ifeq ($(CONFIG_BOARD_CH32V307VCT6), y)
 SRC_DIR +=ch32v307vct6
 endif 
 
+ifeq ($(CONFIG_BOARD_CH32V208RBT6), y)
+SRC_DIR := ch32v208rbt6
+endif
+
 ifeq ($(CONFIG_BOARD_RV32M1_VEGA),y)
 SRC_DIR +=rv32m1-vega
 endif
diff --git a/Ubiquitous/XiZi_IIoT/board/ch32v307vct6/config.mk b/Ubiquitous/XiZi_IIoT/board/ch32v307vct6/config.mk
index 630327afc..760c39480 100755
--- a/Ubiquitous/XiZi_IIoT/board/ch32v307vct6/config.mk
+++ b/Ubiquitous/XiZi_IIoT/board/ch32v307vct6/config.mk
@@ -11,7 +11,7 @@ export APPLFLAGS :=  -nostartfiles -Wl,--gc-sections,-Map=XiZi-app.map,-cref,-u,
 
 export CXXFLAGS :=  -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-common # -std=gnu99
 
-export CROSS_COMPILE ?=/opt/riscv-embedded-gcc/bin/riscv-none-embed-
+export CROSS_COMPILE ?=/opt/riscv64-toolchain/bin/riscv64-unknown-elf-
 
 export DEFINES := -DHAVE_CCONFIG_H -DHAVE_SIGINFO
 
diff --git a/Ubiquitous/XiZi_IIoT/kernel/thread/init.c b/Ubiquitous/XiZi_IIoT/kernel/thread/init.c
index 0a5269ff3..262424430 100644
--- a/Ubiquitous/XiZi_IIoT/kernel/thread/init.c
+++ b/Ubiquitous/XiZi_IIoT/kernel/thread/init.c
@@ -227,7 +227,8 @@ int XiUOSStartup(void)
  
 #ifdef TOOL_SHELL
     extern int userShellInit(void);
-	userShellInit();
+    KPrintf("%s %d\n", __func__, __LINE__);
+    userShellInit();
 #endif
 
 #ifdef USER_APPLICATION
@@ -239,7 +240,8 @@ extern int InitUserspace(void);
 		CreateMainTask();
 	}	
 #else
-	CreateMainTask();
+KPrintf("%s %d\n", __func__, __LINE__);
+    CreateMainTask();
 #endif
 #endif
 
@@ -253,7 +255,10 @@ extern int InitUserspace(void);
     StartWatchdog();
 #endif
 
-	StartupOsAssign();
+    KPrintf("%s %d\n", __func__, __LINE__);
+    extern long ShowTask(void);
+    ShowTask();
+    StartupOsAssign();
     return 0;
 }
 
diff --git a/Ubiquitous/XiZi_IIoT/path_kernel.mk b/Ubiquitous/XiZi_IIoT/path_kernel.mk
index 0d43135e8..3fe649798 100755
--- a/Ubiquitous/XiZi_IIoT/path_kernel.mk
+++ b/Ubiquitous/XiZi_IIoT/path_kernel.mk
@@ -295,6 +295,18 @@ KERNELPATHS += \
 	-I$(KERNEL_ROOT)/include #
 endif
 
+ifeq ($(BSP_ROOT),$(KERNEL_ROOT)/board/ch32v208rbt6)
+KERNELPATHS += \
+	-I$(KERNEL_ROOT)/arch/risc-v/ch32v208rbt6/Core \
+	-I$(KERNEL_ROOT)/arch/risc-v/ch32v208rbt6/Debug \
+	-I$(KERNEL_ROOT)/arch/risc-v/ch32v208rbt6/User \
+	-I$(KERNEL_ROOT)/arch/risc-v/ch32v208rbt6 \
+	-I$(BSP_ROOT)/third_party_driver/include \
+	-I$(BSP_ROOT)/third_party_driver/Peripheral/inc \
+	-I$(BSP_ROOT)/include \
+	-I$(KERNEL_ROOT)/include #
+endif
+
 ifeq ($(BSP_ROOT),$(KERNEL_ROOT)/board/rv32m1-vega)
 KERNELPATHS += \
 	-I$(KERNEL_ROOT)/arch/risc-v/rv32m1-vega \