It is not recommended to turn over the foreskin for a long time to avoid causing damage as well as inducing infection, and may even cause foreskin inlay and edema. Men have a long foreskin, the glans may be completely wrapped by the foreskin, in the cleaning of the foreskin, you can turn the foreskin up, up to the coronary groove area, in order to be able to clean the dirt inside the foreskin, to avoid the emergence of the foreskin glans, in the cleaning of the foreskin should be reset, is not recommended for a long time to turn up. It is not recommended to turn the foreskin up for a long time without cleaning the inside of the foreskin, because the skin of the inner plate of the foreskin is relatively tender, and after turning up the foreskin, it may rub against the underwear, which is easy to cause damage, and it is also easy to lead to bacterial growth, causing infections, and it may even lead to foreskin incarceration and edema. If you have a long foreskin, you can consult a doctor in time, and if necessary, you can consider circumcision surgery to remove the long foreskin, eliminate the causes, and avoid recurring infections.