A nerve root stimulator, according to the present invention, comprises: a body which is installed at the spinal nerve root inside the human body an antenna, which is provided on the body, for receiving a wireless frequency that is irradiated from outside of the human body a power generation unit for generating power by using the wireless frequency that is received by the antenna and electrodes for electrically stimulating the spinal nerve root by using the power that is generated by the power generation unit.
