Bilateral cryptorchidism may also be fertile, but the probability of fertility is much lower than normal. Bilateral cryptorchidism refers to the absence of testicles in both scrotum. The harm of cryptorchidism itself will affect the growth and development of testicles, leading to testicular atrophy and poor development, which in turn will affect the sperm production ability of testicles and lead to abnormal semen quality, and bilateral cryptorchidism will have a greater impact on the fertility of patients. If the testicles cannot produce normal semen, then it is very likely that the patient will not be able to have children. Therefore, for patients with bilateral cryptorchidism, it is recommended to choose surgery in time, so that the testicles can be pulled back into the scrotum for fixation, which can avoid further damage to the testicles and also improve the quality of semen.