Pediatric cryptorchidism has a certain genetic predisposition, with a family history of cryptorchidism, the incidence of the disease in the offspring is about 15%. Cryptorchidism is a congenital disorder with a relatively obvious genetic predisposition, and the development of cryptorchidism is related to the testes themselves and endocrine factors. Cryptorchidism mainly occurs in preterm, low birth weight and male babies with a family history of cryptorchidism. Fetuses born to mothers with bad habits during pregnancy, such as smoking, drinking and drug abuse, are also prone to cryptorchidism. Today, the incidence of cryptorchidism is increasing every year and is one of the major causes of male infertility. Most of the cryptorchidisms in children are unilateral and a few cryptorchidisms are bilateral.