Electric needle system and electric needle and terminal controller thereof

The invention provides an electric needle system which comprises a terminal controller and an electric needle. The terminal controller is used for managing and adjusting the operating parameters of the electric needle and device parameters and sending operation control commands and parameter setting commands for transmitting the parameters to the electric needle. The electric needle comprises a control circuit, batteries for powering the control circuit and an output electrode acting on the surface of skin, wherein the control circuit controls the output electrode to output pulse current according to the commands received from the terminal controller, and the strength of the pulse current is constant and corresponds to the stimulus intensity output by the output electrode. The invention further provides the electric needle and the terminal controller. The electric needle system can not only output the constant current corresponding to the stimulus intensity to act on the surface of the skin, but also flexibly adjust the parameters according to different physical conditions and disease characteristics to meet individual needs of different users. In addition, the electric needle system can achieve wired charging and/or wireless charging.