There is a small black spot on the glans.

"The black spots on the glans penis are thought to be caused by pigmented nevus or pigmentation. Nevus are benign tumors that grow on human epidermis. Any part of the human body may grow and will not become malignant. It is ok to avoid ulceration and infection at ordinary times, and no special treatment is needed. If you suffer from balanitis prepuce, long-term application of topical ointment containing hormone components will lead to dark spots, which has little impact on men's health and does not require treatment. It is also necessary to consider that the poor blood circulation in the glans caused by the foreskin of balanitis leads to dark spots, accompanied by swelling and burning pain. Anti-inflammatory treatment should be carried out in time to avoid necrosis caused by long-term insufficient blood circulation of glans penis. If necessary, it is recommended to go to the urology department of a professional hospital for further treatment after being judged by a professional doctor. "