The foreskin can not be automatically reset after turning over but does not hurt may be due to the existence of mild phimosis problems, the foreskin mouth is relatively small, after turning over the coronal groove stuck in, can not be automatically reset, does not hurt because there is generally no serious incarceration; phimosis is not conducive to the genitourinary health, in general, it is recommended to carry out surgical treatment. Phimosis is a common male genitourinary problem, when the phimosis exists, the foreskin daily in the state of wrapping the glans, the foreskin mouth is also relatively small, under normal circumstances, the glans generally can not be completely exposed. If the mild phimosis more than can successfully turn over the foreskin, the glans complete reveal, the foreskin mouth stuck in the root of the glans, can not automatically reset; but because the phimosis is not very serious, so the foreskin mouth and the penis glans between the glans and not completely jammed, did not lead to the interruption of the blood flow will not lead to the feeling of pain. More serious prepuce, the foreskin opening is very small, after barely turning over the foreskin, the foreskin can be tightly stuck at the root of the glans, hindering the normal blood flow, resulting in severe pain, and even cause edema and tearing of the foreskin, a situation known as foreskin incarceration. In daily life, attention should be paid to maintain foreskin hygiene, change underwear diligently, after turning out the foreskin, the foreskin should be reset in a timely manner, to avoid the occurrence of foreskin ingrown; found that the foreskin redness, edema, pain and other abnormalities, should be promptly consulted for treatment.