Children with cryptorchidism who have not descended on their own after 6 months should be operated as early as possible; those who are older than 24 months and those who have testicular torsion need to be operated in time. Cryptorchidism is a congenital developmental abnormality of the reproductive system, which refers to the abnormal development of the testicle position, unable to descend to the normal position of the scrotum and stays in the retroperitoneum, inguinal canal or entrance of the scrotum. It is prone to irreversible pathological changes after two weeks of age, affecting development and fertility, and prone to testicular torsion and malignant changes. 1. Some children’s cryptorchidism can descend by itself within one week of age, usually within 3 months after birth; for those with a tendency to descend, endocrine treatment can be combined with injection of hormone HCG, LHRH or both. 2. If the testicle has not descended to the scrotum after 6 months of birth, surgery should be performed as early as possible; surgical sedimentation is the gold standard of treatment, the ideal age for fertility preservation is between 12 and 24 months, and the appropriate age for surgery is between 6 and 18 months. 3. Cryptorchidism beyond 24 months of age and testicular torsion should be operated as soon as they are found; if the testicle is found to be atrophied, unable to descend into the scrotum or necrotic during the operation, orchiectomy should be performed if necessary. Cryptorchidism in children needs to be detected early by careful observation, and seek medical treatment in time to avoid serious adverse consequences.