Dark spots on the glans may be normal hyperpigmentation, or may be caused by pigmented nevi or infectious factors. 1. Normal pigmentation: some men may have pigmentation on the surface of the skin after gradual increase in age, or it may be due to the influence of family genetic factors, these are generally normal manifestations and do not require special treatment. 2. Pigmented nevus: usually related to endocrine disorders, skin lesions, or pigmented nevus caused by long-term lack of certain micronutrients in the skin. If it affects aesthetics, it can go to hospital for laser treatment. 3. Infectious factors: such as infection with bacteria, viruses and other microorganisms, etc. Pathogenic bacteria repeatedly stimulate the glans skin place, easy to cause black spots, resulting in localized obvious pigmentation. The type of pathogenic bacteria should be analyzed and then treated. If there is a dark spot on the glans, you should seek timely medical treatment, targeted treatment under the guidance of the doctor.