The invention discloses a hole drilling positioning device for connecting rib plates. The hole drilling positioning device comprises a left longitudinal shaft connected with a left transverse shaft, an adjustable sliding block is arranged in the left transverse shaft, a guide block is connected to one end of the adjustable sliding block, a movable pulley assembly is arranged on the guide block, a left movement rope is connected to the movable pulley assembly, a left movement sleeve is connected to one end of the left movement rope, and the other end of the left movement rope is wound around the movable pulley assembly to be connected with a first fixing block; and a left movement sleeve is fixed to a transmission shaft, a right movement sleeve is further fixed to the transmission shaft and is connected with a right movement pull rope, and the right movement pull rope is wound around a fixed pulley and the movable pulley assembly and penetrates the fixing block to be connected with a second fixing block. The hole drilling positioning device is simple in operation process, man hours are saved, hole drilling on the connecting rib plates in different sizes can be carried out, errors can be reduced, the precision is high, and cost can be saved.