The foreskin covers the urethral orifice, but exposes the urethral orifice and penis head. The slight adhesion between the penis head and the foreskin generally disappears after 3 years old and can turn over. But when I was a child, the foreskin often turned up the urethral orifice, and it was not until adolescence that the penis head was gradually exposed.

When the penis of an adult is soft, the foreskin does not cover the urethral orifice, and the coronal groove will appear when the foreskin is opened, which is the foreskin of normal length. If the foreskin is too long, the foreskin scales will accumulate in the foreskin, causing inflammation of the foreskin glans. Repeated inflammation can make the foreskin mouth shrink and the penis head adhere to phimosis. Penile cancer may be related to long-term stimulation of foreskin scales.

Extended data:

Precautions after operation:

1. Stay in bed for 3-4 days after circumcision, and avoid standing and sitting for a long time. Some young people are embarrassed to ask for leave after the operation, but they still insist on working. It leads to poor local blood circulation, which directly leads to the enlargement of penis head and affects wound healing.

2. Try to wear loose underwear. Generally, after dressing the wound, the doctor will buy a gauze curtain to reduce the friction of the penis head.

3. It is normal for the penis head to slightly edema within 3 ~ 4 days after circumcision, which is caused by anesthesia and surgery. Note that the swelling is pink at this time.

4. Never wet the dressing when urinating. If it has been soaked in urine, it should be replaced as soon as possible.

5, 3 ~ 4 days after surgery, can take sedatives before going to bed, in order to prevent penis erection, pain or bleeding. Young people need more attention, because long-term foreskin makes the penis head and nerve endings very sensitive. Once exposed, it is easy to get an erection, so avoid watching pornographic books and TV, and avoid temporary hugs and kisses between couples to avoid sexual stimulation.

6. The mood is stable within one week after foreskin surgery, and coitus is forbidden within 40 days to avoid erection, incision rupture, bleeding and infection. If you have an erection, take a deep breath and go back to the hospital if necessary.