Abstract: Disclosed in the present disclosure is a suction valve and an endoscope. The suction valve comprises an outer shell, a shaft, and two or more second sealant rings. The outer shell is hollow, and is provided with a pressing part on the top and a first opening in the side wall. The shaft is embedded into the outer shell, and is connected with the pressing part. The shaft is provided with a second opening at the bottom and a third opening in the side wall respectively, and the second opening is in communication with the third opening. The two or more second sealant rings are each sleeved on the shaft. As the pressing part is pressed, the shaft moves downward, such that the third opening is in communication with the first opening.