diff --git a/bsp/cvitek/cv18xx_risc-v/.config b/bsp/cvitek/cv18xx_risc-v/.config
index ff74894dde..60365a528c 100644
--- a/bsp/cvitek/cv18xx_risc-v/.config
+++ b/bsp/cvitek/cv18xx_risc-v/.config
@@ -1299,72 +1299,6 @@ CONFIG_RT_USING_ADT_REF=y
 # end of Arduino libraries
 # end of RT-Thread online packages
 
-#
-# Privated Packages of RealThread
-#
-# CONFIG_PKG_USING_CODEC is not set
-# CONFIG_PKG_USING_PLAYER is not set
-# CONFIG_PKG_USING_MPLAYER is not set
-# CONFIG_PKG_USING_PERSIMMON_SRC is not set
-# CONFIG_PKG_USING_JS_PERSIMMON is not set
-# CONFIG_PKG_USING_JERRYSCRIPT_WIN32 is not set
-
-#
-# Network Utilities
-#
-# CONFIG_PKG_USING_MDNS is not set
-# CONFIG_PKG_USING_UPNP is not set
-# end of Network Utilities
-
-# CONFIG_PKG_USING_WICED is not set
-# CONFIG_PKG_USING_CLOUDSDK is not set
-# CONFIG_PKG_USING_POWER_MANAGER is not set
-# CONFIG_PKG_USING_RT_OTA is not set
-# CONFIG_PKG_USING_RTINSIGHT is not set
-# CONFIG_PKG_USING_SMARTCONFIG is not set
-# CONFIG_PKG_USING_RTX is not set
-# CONFIG_RT_USING_TESTCASE is not set
-# CONFIG_PKG_USING_NGHTTP2 is not set
-# CONFIG_PKG_USING_AVS is not set
-# CONFIG_PKG_USING_ALI_LINKKIT is not set
-# CONFIG_PKG_USING_STS is not set
-# CONFIG_PKG_USING_DLMS is not set
-# CONFIG_PKG_USING_AUDIO_FRAMEWORK is not set
-# CONFIG_PKG_USING_ZBAR is not set
-# CONFIG_PKG_USING_MCF is not set
-# CONFIG_PKG_USING_URPC is not set
-# CONFIG_PKG_USING_DCM is not set
-# CONFIG_PKG_USING_EMQ is not set
-# CONFIG_PKG_USING_CFGM is not set
-# CONFIG_PKG_USING_RT_CMSIS_DAP is not set
-# CONFIG_PKG_USING_SMODULE is not set
-# CONFIG_PKG_USING_SNFD is not set
-# CONFIG_PKG_USING_UDBD is not set
-# CONFIG_PKG_USING_BENCHMARK is not set
-# CONFIG_PKG_USING_UBJSON is not set
-# CONFIG_PKG_USING_DATATYPE is not set
-# CONFIG_PKG_USING_FASTFS is not set
-# CONFIG_PKG_USING_RIL is not set
-# CONFIG_PKG_USING_WATCH_DCM_SVC is not set
-# CONFIG_PKG_USING_WATCH_APP_FWK is not set
-# CONFIG_PKG_USING_GUI_TEST is not set
-# CONFIG_PKG_USING_PMEM is not set
-# CONFIG_PKG_USING_LWRDP is not set
-# CONFIG_PKG_USING_MASAN is not set
-# CONFIG_PKG_USING_BSDIFF_LIB is not set
-# CONFIG_PKG_USING_PRC_DIFF is not set
-
-#
-# RT-Thread Smart
-#
-# CONFIG_PKG_USING_UKERNEL is not set
-# end of RT-Thread Smart
-
-# CONFIG_PKG_USING_TRACE_AGENT is not set
-# CONFIG_PKG_USING_DLOG is not set
-# CONFIG_PKG_USING_EXT4 is not set
-# end of Privated Packages of RealThread
-
 #
 # General Drivers Configuration
 #
diff --git a/bsp/cvitek/cv18xx_risc-v/SConstruct b/bsp/cvitek/cv18xx_risc-v/SConstruct
index 6ffc4cd71a..967a4e2910 100755
--- a/bsp/cvitek/cv18xx_risc-v/SConstruct
+++ b/bsp/cvitek/cv18xx_risc-v/SConstruct
@@ -24,13 +24,6 @@ Export('rtconfig')
 rtconfig.CPU='virt64'
 rtconfig.ARCH='risc-v'
 
-stack_size = 4096
-
-stack_lds = open('link_stacksize.lds', 'w')
-if GetDepend('__STACKSIZE__'): stack_size = GetDepend('__STACKSIZE__')
-stack_lds.write('__STACKSIZE__ = %d;\n' % stack_size)
-stack_lds.close()
-
 SDK_ROOT = os.path.abspath('./')
 
 if os.path.exists(SDK_ROOT + '/drivers'):
@@ -44,5 +37,13 @@ objs = PrepareBuilding(env, RTT_ROOT, has_libcpu = False)
 # include libraries
 objs.extend(SConscript(drivers_path_prefix + '/SConscript', variant_dir='build/drivers', duplicate=0))
 
+stack_size = 4096
+
+stack_lds = open('link_stacksize.lds', 'w')
+if GetDepend('__STACKSIZE__'):
+    stack_size = GetDepend('__STACKSIZE__')
+stack_lds.write('__STACKSIZE__ = %d;\n' % stack_size)
+stack_lds.close()
+
 # make a building
 DoBuilding(TARGET, objs)
diff --git a/bsp/cvitek/cv18xx_risc-v/link_stacksize.lds b/bsp/cvitek/cv18xx_risc-v/link_stacksize.lds
index 28438c7da1..38d573dcad 100755
--- a/bsp/cvitek/cv18xx_risc-v/link_stacksize.lds
+++ b/bsp/cvitek/cv18xx_risc-v/link_stacksize.lds
@@ -1 +1 @@
-__STACKSIZE__ = 4096;
+__STACKSIZE__ = 8192;
diff --git a/bsp/cvitek/cv18xx_risc-v/rtconfig.h b/bsp/cvitek/cv18xx_risc-v/rtconfig.h
index 8932c30602..8f5a1391b4 100755
--- a/bsp/cvitek/cv18xx_risc-v/rtconfig.h
+++ b/bsp/cvitek/cv18xx_risc-v/rtconfig.h
@@ -439,18 +439,6 @@
 /* end of Arduino libraries */
 /* end of RT-Thread online packages */
 
-/* Privated Packages of RealThread */
-
-
-/* Network Utilities */
-
-/* end of Network Utilities */
-
-/* RT-Thread Smart */
-
-/* end of RT-Thread Smart */
-/* end of Privated Packages of RealThread */
-
 /* General Drivers Configuration */
 
 #define BSP_USING_UART