diff --git a/Kconfig b/Kconfig
new file mode 100644
index 0000000000..ac17c10708
--- /dev/null
+++ b/Kconfig
@@ -0,0 +1,2 @@
+source "$RTT_DIR/src/KConfig"
+source "$RTT_DIR/components/KConfig"
diff --git a/components/KConfig b/components/KConfig
new file mode 100644
index 0000000000..5747befe3a
--- /dev/null
+++ b/components/KConfig
@@ -0,0 +1,13 @@
+menu "RT-Thread Components"
+
+source "$RTT_DIR/components/finsh/KConfig"
+
+source "$RTT_DIR/components/dfs/KConfig"
+
+source "$RTT_DIR/components/drivers/KConfig"
+
+source "$RTT_DIR/components/libc/KConfig"
+
+source "$RTT_DIR/components/net/KConfig"
+
+endmenu
diff --git a/components/dfs/KConfig b/components/dfs/KConfig
new file mode 100644
index 0000000000..6de6d05ea8
--- /dev/null
+++ b/components/dfs/KConfig
@@ -0,0 +1,77 @@
+menu "Device virtual file system"
+
+config RT_USING_DFS
+    bool "Using device virtual file system"
+    default y
+    help
+        The device file system is a light weight virtual file system.
+
+if RT_USING_DFS
+    config DFS_USING_WORKDIR
+        bool "Using working directory"
+        default y
+
+    config DFS_FILESYSTEMS_MAX
+        int "The maximal number of mounted file system"
+        default 2
+    
+    config DFS_FD_MAX
+        int "The maximal number of opened files"
+        default 4
+    
+    config RT_USING_DFS_ELMFAT
+        bool "Enable elm-chan fatfs"
+        default y
+        help
+            FatFs is a generic FAT/exFAT file system module for small embedded systems.
+    if RT_USING_DFS_ELMFAT
+        config RT_DFS_ELM_CODE_PAGE
+            int "OEM code page"
+            default 437
+        
+        config RT_DFS_ELM_MAX_LFN
+            int "Maximal size of file name length"
+            default 256
+        
+        config RT_DFS_ELM_DRIVES
+            int "Number of volumes (logical drives) to be used."
+            default 2
+        
+        config RT_DFS_ELM_MAX_SECTOR_SIZE
+            int "Maximum sector size to be handled."
+            default 512
+            help
+                if you use some spi nor flash for fatfs, please set this the erase sector size, for example 4096.
+
+        config RT_DFS_ELM_USE_ERASE
+            bool "Enable sector erase feature"
+            default n
+        
+        config RT_DFS_ELM_REENTRANT
+            bool "Enable the reentrancy (thread safe) of the FatFs module"
+            default y
+    endif
+
+    config RT_USING_DFS_DEVFS
+        bool "Using devfs for device objects"
+        default y
+    
+    config RT_USING_DFS_NET
+        bool "Enable BSD socket operated by file system API"
+        default n
+        help
+            Let BSD socket operated by file system API, such as read/write and involveed in select/poll POSIX APIs.
+
+    config RT_USING_DFS_NFS
+        bool "Using NFS v3 client file system"
+        default n
+
+    if RT_USING_DFS_NFS
+        config RT_NFS_HOST_EXPORT
+            string "NFSv3 host export"
+            default "192.168.1.5:/"
+    endif
+
+endif
+
+endmenu
diff --git a/components/drivers/KConfig b/components/drivers/KConfig
new file mode 100644
index 0000000000..b72d7d7162
--- /dev/null
+++ b/components/drivers/KConfig
@@ -0,0 +1,90 @@
+menu "Device Drivers"
+
+config RT_USING_SERIAL
+	bool "Using serial device drivers"
+	default y
+
+config RT_USING_CAN
+	bool "Using CAN device drivers"
+	default n
+
+config RT_USING_HWTIMER
+	bool "Using hardware timer device drivers"
+	default n
+
+config RT_USING_I2C
+	bool "Using I2C device drivers"
+	default n
+
+config RT_USING_PIN
+	bool "Using generic GPIO device drivers"
+	default y
+
+config RT_USING_MTD_NOR
+	bool "Using MTD Nor Flash device drivers"
+	default n
+
+config RT_USING_MTD_NAND
+	bool "Using MTD Nand Flash device drivers"
+	default n
+
+config RT_USING_RTC
+	bool "Using RTC device drivers"
+	default n
+
+config RT_USING_SDIO
+	bool "Using SD/MMC device drivers"
+	default n
+
+config RT_USING_SPI
+	bool "Using SPI Bus/Device device drivers"
+	default n
+
+	if RT_USING_SPI
+		config RT_USING_W25QXX
+			bool "Using W25QXX SPI NorFlash"
+			default n
+
+		config RT_USING_GD
+			bool "Using GD SPI NorFlash"
+			default n
+
+		config RT_USING_ENC28J60
+			bool "Using ENC28J60 SPI Ethernet network interface"
+			select RT_USING_LWIP
+			default n
+
+		config RT_USING_SPI_WIFI
+			bool "Using RW009/007 SPI Wi-Fi wireless interface"
+			select RT_USING_LWIP
+			default n
+	endif
+
+config RT_USING_WDT
+	bool "Using Watch Dog device drivers"
+	default n
+
+config RT_USING_USB_HOST
+	bool "Using USB host"
+	default n
+
+	if RT_USING_USB_HOST
+		config RT_USBH_ADK
+			bool "Enable connected with Android by ADK USB"
+			default n
+	endif
+
+config RT_USING_USB_DEVICE
+	bool "Using USB device"
+	default n
+
+	if RT_USING_USB_DEVICE
+		config RT_USB_DEVICE_CDC
+			bool "Enable to use device as CDC device"
+			default n
+
+		config RT_USB_DEVICE_MSTORAGE
+			bool "Enable to use device as Mass Storage device"
+			default n
+	endif
+endmenu
diff --git a/components/finsh/KConfig b/components/finsh/KConfig
new file mode 100644
index 0000000000..e735517f4b
--- /dev/null
+++ b/components/finsh/KConfig
@@ -0,0 +1,43 @@
+menu "Command shell"
+
+config RT_USING_FINSH
+    bool "finsh shell"
+    default y
+
+if RT_USING_FINSH
+
+config FINSH_USING_SYMTAB
+    bool "Using symbol table for commands"
+    default y
+
+config FINSH_USING_DESCRIPTION
+    bool "Keeping description in symbol table"
+    default y
+
+config FINSH_THREAD_STACK_SIZE
+    int "The stack size for finsh thread"
+    default 4096
+
+config FINSH_USING_AUTH
+    bool "shell support authentication"
+    default n
+   
+config FINSH_DEFAULT_PASSWORD
+    string "The default password for shell authentication"
+    default "rtthread"
+
+config FINSH_USING_MSH
+    bool "Using module shell"
+    default y
+
+config FINSH_USING_MSH_DEFAULT
+    bool "Using module shell in default"
+    default y
+
+config FINSH_USING_MSH_ONLY
+    bool "Only using module shell"
+    default n
+
+endif
+
+endmenu
diff --git a/components/libc/KConfig b/components/libc/KConfig
new file mode 100644
index 0000000000..155cb0d700
--- /dev/null
+++ b/components/libc/KConfig
@@ -0,0 +1,11 @@
+menu "libc"
+
+config RT_USING_LIBC
+	bool "Enable libc APIs from toolchain"
+	default y
+
+config RT_USING_PTHREADS
+	bool "Enable pthreads APIs"
+	default y
+
+endmenu
diff --git a/src/Kconfig b/src/Kconfig
new file mode 100644
index 0000000000..04b154b7a0
--- /dev/null
+++ b/src/Kconfig
@@ -0,0 +1,156 @@
+menu "Real-time Kernel"
+
+config RT_NAME_MAX
+    int "The maximal size of kernel object name"
+    range 2 32
+    default 8
+    help 
+        Each kernel object, such as thread, timer, semaphore etc, has a name, the RT_NAME_MAX is the maximal size of this object name.
+
+config RT_ALIGN_SIZE
+    int "Alignment size for CPU architecture data access"
+    default 4
+    help
+        Alignment size for CPU architecture data access
+
+config RT_THREAD_PRIORITY_MAX
+    int "The maximal level value of priority of thread"
+    range 8 256
+    default 32
+
+config RT_TICK_PER_SECOND
+    int "Tick frequency, Hz"
+    range 10 1000
+    default 100
+    help
+        System's tick frequency, Hz.
+
+config RT_DEBUG
+    bool "Enable debug features"
+    default y
+
+if RT_DEBUG
+
+config RT_USING_OVERFLOW_CHECK
+    bool "Using stack overflow checking"
+    default y
+    help
+        Enable thread stack overflow checking. The stack overflow is checking when each thread switch.
+
+config RT_DEBUG_INIT
+    bool "Enable system initialization informat print"
+    default n
+    help
+        print the procedure name of initialization
+
+config RT_DEBUG_THREAD
+    bool "Enable thread switch information dump"
+    default n
+    help
+        print the switch to/from thread name when each thread context switch
+
+endif
+
+config RT_USING_HOOK
+    bool "Enable system hook"
+    default y
+    help
+        Enable the hook function when system running, such as idle thread hook, thread context switch etc.
+
+config RT_USING_TIMER_SOFT
+    bool "Enable software timer with a timer thread"
+    default n
+    help
+        the timeout function context of soft-timer is under a high priority timer thread.
+
+if RT_USING_TIMER_SOFT
+config RT_TIMER_THREAD_PRIO
+    int "The priority level value of timer thread"
+    default 4
+
+config RT_TIMER_THREAD_STACK_SIZE
+    int "The stack size of timer thread"
+    default 512
+
+endif
+
+menu "Inter-Thread communication"
+
+config RT_USING_SEMAPHORE
+    bool "Enable semaphore"
+    default y
+
+config RT_USING_MUTEX
+    bool "Enable mutex"
+    default y
+
+config RT_USING_EVENT
+    bool "Enable event flag"
+    default y
+
+config RT_USING_MAILBOX
+    bool "Enable mailbox"
+    default y
+
+config RT_USING_MESSAGEQUEUE
+    bool "Enable message queue"
+    default y
+
+endmenu
+
+menu "Memory Management"
+
+    config RT_USING_MEMPOOL
+        bool "Using memory pool"
+        default y
+        help
+            Using static memory fixed partition
+
+    config RT_USING_MEMHEAP
+        bool "Using memory heap object"
+        default n
+        help
+            Using memory heap object to manage dynamic memory heap.
+
+    config RT_USING_HEAP
+        bool "Using dynamic memory management"
+        default y
+
+    if RT_USING_HEAP
+
+        choice USING_HEAP
+
+        config RT_USING_SMALL_MEM
+            bool "The memory management for small memory"
+
+        config RT_USING_SLAB
+            bool "Using SLAB memory management for large memory"
+        endchoice
+
+    endif
+
+endmenu
+
+menu "Kernel Device Object"
+
+    config RT_USING_DEVICE
+        bool "Using device object"
+        default y
+
+    config RT_USING_CONSOLE
+        bool "Using console for rt_kprintf"
+        default y
+
+    if RT_USING_CONSOLE
+        config RT_CONSOLEBUF_SIZE
+            int "the buffer size for console log printf"
+            default 128
+
+        config RT_CONSOLE_DEVICE_NAME
+            string "the device name for console"
+            default "uart"
+    endif
+
+endmenu
+
+endmenu
diff --git a/tools/mkrtconfig.py b/tools/mkrtconfig.py
new file mode 100644
index 0000000000..31d30ff265
--- /dev/null
+++ b/tools/mkrtconfig.py
@@ -0,0 +1,50 @@
+import os
+
+# make rtconfig.h from .config
+
+def mk_rtconfig(filename):
+    try:
+        config = file(filename)
+    except:
+        print 'open .config failed'
+        return
+
+    rtconfig = file('rtconfig.h', 'w')
+    rtconfig.write('#ifndef RT_CONFIG_H__\n')
+    rtconfig.write('#define RT_CONFIG_H__\n\n')
+
+    empty_line = 1
+
+    for line in config:
+        line = line.lstrip(' ').replace('\n', '').replace('\r', '')
+
+        if len(line) == 0: continue
+
+        if line[0] == '#':
+            if len(line) == 1:
+                if empty_line:
+                    continue
+
+                rtconfig.write('\n')
+                empty_line = 1
+                continue
+
+            rtconfig.write('/*%s */\n' % line[1:])
+            empty_line = 0
+        else:
+            empty_line = 0
+            setting = line.split('=')
+            if len(setting) >= 2:
+                if setting[0].startswith('CONFIG_'):
+                    setting[0] = setting[0][7:]
+
+                if setting[1] == 'y':
+                    rtconfig.write('#define %s\n' % setting[0])
+                else:
+                    rtconfig.write('#define %s %s\n' % (setting[0], setting[1]))
+
+    rtconfig.write('#endif\n')
+    rtconfig.close()
+
+if __name__ == "__main__":
+    mk_rtconfig('.config')