A compensation structure for electrical characteristics of a network plug includes a base and an upper cover. The base and the upper cover form a plug main body. A cable is inserted into the plug main body. A circuit board is connected to the cable through a piercing terminal seat and a press plate. a plurality of compensation sheets disposed in rows on a front bottom of the circuit board, wherein at least one set of the compensation sheets have the same shape, the compensation sheets are plate-shaped and the shapes of the compensation sheets are determined by capacitances between the compensation sheets to compensate electrical characteristics of the network plug.