Cryptorchidism is located in the groin, and the surgery is a basic urological procedure, similar to the size of appendectomy, and the situation is not serious. However, the timing of surgery is critical. Usually, the timing of surgery is within one week to two weeks of age, when the testicle has not yet undergone ultrastructural changes and has almost no effect on the spermatogenic function, and as long as the testicle is inserted into the scrotum within this time period, a completely normal testicular function can be achieved. The longer the time, the greater the possibility of damage to the spermatogenic function of the testis and the higher the chance of infertility after surgery, and the temperature rise of the testis staying in the groin for a long time will increase the chance of testicular malignancy by about 18-40 times. Therefore, surgery for cryptorchidism in the groin needs to be detected and treated early. The risk of the surgery itself is very small, but it is important to seek medical attention and surgery as soon as possible.