The circumcision anastomosis is usually reserved for 0.5 to 0.8 centimeters of foreskin, so it is recommended that it be performed under a doctor’s supervision. Circumcision anastomosis is a male circumcision procedure. Before proceeding, a professional doctor will usually consider the length of the reserved foreskin. If the foreskin is reserved too short, then the glans area and penis may be pulled during erection, which can lead to scoliosis and may also be painful. If the foreskin is reserved too long, it may lead to unresolved circumcision and may also lead to narrowing of the urethra. When performing a circumcision anastomosis, the doctor will usually reserve the length of the foreskin according to the length of the foreskin of a normal human body, so it will usually be around 0.5 cm to 0.8 cm. However, the length of the cut foreskin is not fixed. Before or after the surgery, it is recommended to take good care of hygiene, such as washing private parts with warm water, changing underwear and so on.