Tightening of the foreskin may be caused by phimosis, circumcision and so on. First of all, caused by overgrowth of foreskin, it is mainly considered that there is a narrow ring around the foreskin, and the difficulty of upturning leads to the tightening of foreskin. Secondly, phimosis refers to the fact that the foreskin completely wraps the glans and the glans cannot be exposed under any circumstances, so there is difficulty in upturning it, leading to tightening of the foreskin. Because the foreskin covers the glans, the glans coronalis is prone to induce glansitis, and it is easy to form foreskin scale. In addition, the tight foreskin may also be caused by other reasons, it is recommended that patients with tight foreskin go to the hospital in time to avoid delay. Eat more light food in daily life, you can eat more fruits, fresh vegetables and so on. Ensure daily water intake and keep the urinary tract open.