Children cryptorchidism more than one and a half years old after surgery may affect fertility, it is recommended to complete the surgical treatment as early as possible to avoid adverse consequences. Male babies usually have testicles descending into the scrotum at 7 to 9 months of pregnancy, and there are many babies who will have testicles fully landed only after birth. Most of them are recommended to observe the age of six months, and if the baby still has not descended beyond six months surgical treatment can be considered, and it is not recommended to exceed two years of age at the latest. According to the current medical statistics, unilateral cryptorchidism has a 30% chance of infertility, bilateral is more than 50%, due to the body temperature is higher than the scrotum, the testicles are located in the body will affect the normal function of spermatogenesis, serious cases lead to testicular atrophy, infertility, and even induce testicular cancer, the earlier the treatment, the better the prognosis. Therefore, parents are advised to bring their children to the doctor for evaluation and active treatment to improve the prognosis.