Circumcision refers to circumcision, which is the removal of the excessively long foreskin. Advantages of circumcision are good for hygiene, prevention of penile cancer, possible improvement of premature ejaculation symptoms, etc.; disadvantages include psychological burden, pain and discomfort, etc. 1. Advantages of circumcision: (1) Beneficial to personal hygiene: if the foreskin is too long, the inner side of the foreskin is not easy to be cleaned, and it is easy to suffer from glansitis. (2) Preventing penile cancer: Reducing the occurrence of glans inflammation can also eliminate the possibility of penile cancer, so circumcision is of great significance in preventing penile cancer. (3) Possible improvement of premature ejaculation symptoms: After the excess foreskin is removed, the glans is eventually revealed. When the glans often rubs against the underwear and the root of the thighs, the sensitivity of the glans will be reduced, thus improving the symptoms of premature ejaculation. (4) Penile development: During puberty, if a man is circumcised, it leads to the growth of the head of the penis due to the wrapping of the foreskin, which lacks the space for growth and affects the growth and development of the penis. 2. Disadvantages of circumcision: (1) Psychological burden: after circumcision will make some patients have psychological burden, loss of interest in sex life will lead to some depression, others will lead to sexual frigidity, and in the long run will lead to erectile dysfunction. (2) Pain and discomfort: the surgery will cause pain and discomfort, and postoperative infection of the circumcision wound may occur, as well as bleeding, cracking and other related complications. It is recommended that patients with circumcision or phimosis go to regular hospitals for consultation and treatment.