A raised mole under the glans can be caused by friction or disease, the common causes of disease are trichomoniasis, Candida albicans glans, etc., which should be emphasized and actively treated. 1. Friction: Because the underwear or pants are too tight or the sex life is not sufficiently lubricated for a long time and often subjected to friction, so that it appears in the lower part of the glans a black mole. No obvious symptoms do not need to deal with, rapid growth or pain should be timely to the hospital to remove and do pathological experiments. 2.Diseases: (1) Trichomonas glans: erythema and papules appear on the glans, with clear edges and gradually expanding, should be actively engaged in the treatment of trichomonas, the use of metronidazole orally, and external acetic acid solution cleaning, avoid sexual intercourse during the period. For larger moles, surgical excision is feasible. (2) Candida albicans glans: in the glans, foreskin surface smooth, erythema, small herpes, erythema edge is clear, there is mucus exudation, the treatment to be antifungal treatment, such as the use of miconazole ointment local topical, avoid coitus during the period of time, for the mole is larger, feasible surgical excision. The above symptoms, should be timely consultation, active treatment, so as not to delay the condition.