The invention discloses a general surgery anti-effusion type wound irrigator. The irrigator comprises a flushing cover, the flushing cover is arranged in a semi-cylindrical hollow structure, one end of the flushing cover is provided with a connecting plate, one end, close to the connecting plate, of the outer side wall of the flushing cover is fixedly connected to a fixing ear, a limiting rod is fixedly connected to the top of the side, close to the flushing cover, of the connecting plate, the limiting rod is slidably mounted on the fixing ear, a screw rod is connected in the middle of the side wall of the connecting plate, one end, close to the flushing cover, of the screw rod threadly penetrates through the side wall of the flushing cover and extends to the flushing cover and is rotatably connected with a moving plate, the moving plate fits the inner wall of the flushing cover, the moving plate is slidably mounted in the flushing cover, and an inlet tube is fixedly connected betweenthe side wall borrom of the connecting plate and the moving plate. The irrigator has novel structure and convenient operation, can control and adjust the size of the cleaning area, can timely extracta used cleaning liquid to avoid liquid accumulation, and provides convenience for medical staff to clean up after and during operation.