The vas deferens is an elongated tissue structure whose thickness is mainly related to the thickness of the wall, which is roughly 1.0 to 1.5 millimeters on one side. The vas deferens is a muscular tube characterized by a thick wall and a narrow lumen. The tissue structure of the wall of the vas deferens mainly consists of three layers: the mucous membrane layer, the muscular layer, and the outer membrane layer, among which the muscular layer is relatively thicker, about 1.0~1.5 millimeters. Subjectively, the vas deferens is similar in thickness to a matchstick when touched. The vas deferens belongs to an important tissue organ and is also a necessary organ for ejaculation. Excessive touching and squeezing will affect the physiological function of the vas deferens. To summarize, when the vas deferens appears abnormal situation, must go to the urology department of the regular hospital in time.