Generally preschoolers are physiologically circumcised, upturning the foreskin and not revealing the glans, which is a self-defense mechanism. If the child usually does not have a history of urinary bulge, difficulty in urination, painful urination, itching of the penis, repeated inflammation of the foreskin and glans, no special treatment is needed until the age of 7-8 years, and can be observed at the age of 7-8 years. If you observe 7-8 years old, go to the hospital to check and see how loose or tight the outer foreskin is, if the outer foreskin is very loose, circumcision is not needed. If the outer opening of the foreskin is very tight, you can try to expand first to see the effect, and then cut the foreskin if the effect is not good. There is no specific age limit for circumcision, and the clearest indication for surgery is scarred circumcision formed after repeated infections, while most others can be operated on without surgery.