diff --git a/components/net/KConfig b/components/net/KConfig
index d6c2c2101a..5b9c46a4be 100644
--- a/components/net/KConfig
+++ b/components/net/KConfig
@@ -122,4 +122,6 @@ config RT_USING_LWIP
 
 endmenu
 
+source "$RTT_DIR/components/net/freemodbus/KConfig"
+
 endmenu
diff --git a/components/net/freemodbus/KConfig b/components/net/freemodbus/KConfig
new file mode 100644
index 0000000000..9321c61a0e
--- /dev/null
+++ b/components/net/freemodbus/KConfig
@@ -0,0 +1,17 @@
+menu "Modbus master and slave stack"
+
+config RT_USING_MODBUS
+	bool "Enable Modbus stack"
+	default n
+
+	if RT_USING_MODBUS
+		config RT_MODBUS_MASTER_RTU
+			bool "RTU master mode"
+			default n
+
+		config RT_MODBUS_SLAVE_RTU
+			bool "RTU slave mode"
+			default n
+	endif
+
+endmenu