The invention relates to an electrode plate assembly, an pantograph and a charging device. The electrode plate assembly comprises a fixed conductive piece used for being fixed on an insulation base and a movable pole plate for making conductive contact with a matched pantograph pole plate, wherein the movable pole plate and the fixed conductive piece are arranged at intervals and are conductivelyconnected through a flexible connection, and the electrode plate assembly further comprises an elastic piece for applying elastic force to the movable pole plate to enable the movable pole plate to move away from the fixed conductive piece, so that the movable pole plate can move relative to the fixed conductive piece, and a cable fixing structure is arranged on the fixed conductive piece for fixedly connecting with a cable. Compared with the prior art, according to the electrode plate assembly, the movable pole plate is in flexible connection with the fixed conductive piece, the elastic pieceis arranged between the fixed conductive piece and the movable pole plate, the cable is fixedly connected with the fixed conductive piece through the cable fixing structure, and during charging, themovable pole plate is leveled through movement, but the cable is kept fixed, so that the problem that the service life of the cable is short due to the fact that the cable moves along with the pole plate is solved.