Pediatric circumcision is recommended and circumcision dilation is not recommended for the following hazards: 1. Local pain. This pain is more intense and difficult for children to bear; 2. Foreskin edema. After the expansion of the prepuce, there will be local edema, and accompanied by foreskin rupture, bleeding and other symptoms, and sometimes may be combined with infection, resulting in increased local secretions or pus; 3, the prepuce through the expansion surgery, and can not improve the narrowing of the urethral orifice, but will lead to local edema and aggravate the narrowing of the outer foreskin, such as the combination of infection or the emergence of local scarring, can cause the symptoms of prepuce aggravation. Therefore, local expansion is not recommended; 4. After expansion, the glans glans adhesion is produced, which instead leads to the accumulation of foreskin scale or local pain, itching, tingling and other symptoms.