The foreskin should not be cut, only when the foreskin is too long triggering circumcision or recurrent episodes of glansitis of the foreskin, surgery is required to remove. The foreskin is a skin that exists in all men. Before the age of seven, the foreskin will cover the surface of the glans to protect it, and after the age of seven, with the growth and development of the penis, the foreskin will gradually retreat to the glans, which is a normal physiological phenomenon, and at this time the foreskin does not need to be removed. There are still 30% of men whose foreskin does not retreat to the glans, resulting in excessive secretion of foreskin scale, which can lead to inflammatory stimulation or circumcision, which can increase the risk of penile cancer in men, and the glans is wrapped by the foreskin for a long time, and its sensitivity is too high, which can lead to premature ejaculation in men. It needs to be surgically removed and can be circumcised. At the same time, the foreskin should be cleaned every day to maintain the hygiene of the foreskin.