Small white dots on the foreskin are usually pearly rashes. Pearl rash can be the result of chronic inflammatory irritation, such as in patients with circumcision, who often have pearl rash. Alternatively, it is thought that pearl rash is a variation on the normal physiology of the sebaceous glands. Regardless of the cause, pearl rash does not require treatment and does not cause any symptoms. In addition, there are small white dots on the foreskin, there may also be symptoms caused by the patient’s long-term masturbation. Patients who masturbate for a long time are prone to penile epidermal damage leading to epidermal infection, and bacteria can cause small white dots to appear on the foreskin. The foreskin glansitis, may also lead to small white spots on the foreskin, such as Candida albicans glansitis or superficial, ulcerative foreskin glansitis, the foreskin will have small white spots.