After bilateral cryptorchidism surgery, the vast majority of patients can proceed normally to childbirth, and 95% of patients can proceed normally to childbirth. In bilateral cryptorchidism, because the testes do not effectively descend to the scrotum early, but stay in the retroperitoneum, inguinal canal or scrotal inlet. The contractile function of the scrotum can regulate the temperature of the scrotum to be 1.5-2 degrees below the normal body temperature, thus the normal spermatogenic function of the testicular spermatogenic tubules can be maintained. Cryptorchidism is affected by temperature for a long time, and the spermatogenesis is impaired. For bilateral cryptorchidism, early testicular descent fixation is recommended. It is generally recommended that if there is no descent after the age of 2, early surgery should be performed, which will help a lot in the recovery of sperm quality after surgery and usually will not affect fertility.