Not everyone has to be circumcised. If 1/3 of the glans can be exposed, the opening of the foreskin is not too small, it can be turned up normally, it doesn’t affect sex life, there is no pulling pain when the penis is erected, and there is no recurrent infection of the foreskin in normal times, the surgery can be avoided. On the contrary, if there is a prepuce, the foreskin can not be upturned, repeated inflammation of the glans and the inner plate of the foreskin, or the opening of the foreskin is too small, even if the foreskin can be upturned but easy to form the foreskin inlaid, it is best to perform circumcision in these cases.