The utility model relates to a traveling valve cover on an anti-corrosion type oil well pump. The traveling valve cover comprises an upper joint (1), a valve cover flap (2), a valve ball (3), a valve ball seat (4), a valve cover connecting tube (5) and a lower joint (6), wherein the upper joint (1), the valve cover flap (2) and the valve cover connecting tube (5) are sequentially connected as a whole, the outer diameter of the upper joint (1) is smaller than the inner diameter of the valve cover flap (2), and the valve cover flap (2) has the same outer diameter as that of the valve cover connecting tube (5); and the lower joint (6) is connected with the valve cover connecting tube (5) by threads, the valve ball (3) and the valve ball seat (4) are arranged in the valve cover connecting tube (5), metal alloy layers (7) are evenly plated on the inner surfaces of the valve cover connecting tube (5) and the valve cover flap (2). The device is used for production of a corrosive sucker rod pump well, and the pump inspection period of the sucker rod pump well is prolonged.