Moles on the glans may be caused by nevus pigmentosus, superficial penile vein embolism, mycosis glabellaris and other reasons. 1. Nevus pigmentosus: nevus pigmentosus is a manifestation produced by benign melanocytes gathering between the epidermis and the dermis, and its appearance may look flat, raised, granular, or may be brown, blue or black. 2. Superficial penile vein embolism: If the patient’s penile area has superficial vein embolism, it may also lead to localized pigmentation to form moles. 3. Mycotic glans: mainly due to the inflammation caused by mycobacteria, it will form localized hyperpigmentation, i.e. nevus, on the surface of the glans skin. There will also be localized edema, erosion and peeling symptoms. In addition, moles on the glans can also be seen in other diseases, it is recommended that patients go to the hospital in time to avoid delay.