Scrotal laxity may be a symptom of certain physiological phenomena or a manifestation of pathologic factors such as varicocele. 1. Physiological factors: (1) With age, there will be a gradual relaxation of the scrotal skin, which is related to the gradual decline and decrease of body fat content and is a normal physiological phenomenon. (2) may also be when the outside world when the weather is hot, in the scrotal skin relaxation, making the testicles away from the body cavity, and reduce the temperature in the scrotal cavity to achieve the role of temperature regulation, is a normal phenomenon; or contact with the outside world warm environment, such as hot water immersion, etc., there can be a natural relaxation of the scrotal skin sagging. 2. Pathological factors: varicose veins of the spermatic cord, refers to the spermatic cord trailing vascular plexus due to a variety of reasons caused by blood stagnation, resulting in local venous expansion, tortuous. Patients are usually asymptomatic and easily overlooked, and some patients may cause scrotal prolapse or scrotal laxity, which can affect fertility and is one of the main causes of male infertility. It may also be caused by other factors, and this symptom alone is not enough to diagnose the disease. It is recommended that if physiological causes are ruled out, you should consult a doctor to clarify the cause of the disease and treat it.