The recurrence of foreskin ulcers is considered to be related to diseases such as syphilis, glans phimosis or genital herpes. 1. Syphilis: it is an infectious disease caused by syphilis spirochete infection. Stage I syphilis can occur as a hard chancre, which appears as a small red spot on the external genital area, such as the male prepuce and glans, and gradually turns into a pimple, hard nodule, and a painless ulcer. In the case of incomplete or untreated stage I syphilis, stage I syphilis becomes stage II and a syphilis rash appears. 2. Foreskin glansitis: poor cleaning of the foreskin and glans, accumulation of foreskin scale, or infection by bacteria, fungi and other pathogens can cause the symptoms, redness, swelling and pain of the foreskin and penis, and in severe cases, can cause ulcers and erosion. 3. genital herpes: mainly caused by sexual contact leading to herpes simplex virus infection, clinically can be divided into primary, recurrent and subclinical three, in which recurrent genital herpes appear blisters broken to form ulcers, can be intervals of more than a month to recur many times. There are recurring foreskin ulcers, it is recommended to consult a doctor in time to clarify the cause of the disease, and then follow the doctor’s instructions for treatment.