The utility model discloses an anti - misalignment's financial management voucher punch flattening device, the wireless terminal device comprises a device body, the groove of putting of symmetric distribution is seted up on the inside top of equipment body, the inside top fastening of equipment body has the air pump, the air pump passes through push rod and extension stem elastic connection, the extension stem is through the horizontal pole and the telescopic link elastic connection that punches, the telescopic link that punches is connected with the sword that punches through the board that flattens, the inside bottom mounting of equipment body has the constant head tank, the springiness cushioning board has been laid to the inside of constant head tank, seted up punching slot on the terminal surface of equipment body, punching slot is equipped with threely altogether, and three punching slot difference reciprocal distribution is in the constant head tank outside. The utility model discloses an air pump is as power, and line location can be advanced through the constant head tank to the work of punching that can high efficiency, and the precision of punching height is efficient, can reach the purpose that flattens through flatten board and springiness cushioning board when punching when the work of punching is gone on.