If the penis skin covers the penis head and urethral orifice, but it can be turned out to expose the whole penis head when the penis is weak or erect, it can be judged that the foreskin is too long.

1, in which the foreskin wraps the penis head in a weak state, and the foreskin can be everted or exposed in an erect state, which is called pseudo redundant foreskin.

2. It is said that the penis head can't be everted when it is weak, and the penis head can't be everted when it is erect. The foreskin covering the penis head and urethral orifice can't be everted because of the adhesion of penis skin and penis head, and the external opening of foreskin is narrow, exposing the penis head.

3. Most patients with long foreskin have no obvious symptoms, but they are at risk of causing balanitis, incarceration and chapped foreskin, thus affecting the local health of penis, the quality of sexual life and the health of sexual partners.

It is suggested that patients with redundant prepuce and phimosis should be circumcised under the condition of definite diagnosis, surgical indications and no contraindications, which is beneficial to reproductive health.