Black spots on the glans are generally divided into the following two aspects: 1. caused by glansitis of the foreskin, long-term prepuce, prepuce, resulting in glansitis, inflammatory stimulation or frequent sexual stimulation, resulting in melanin deposition. If there is no special discomfort, there is no need to worry and no need for special treatment, just keep the local cleanliness and hygiene.2. Melanin-forming moles are located on the glans, and long-term stimulation of the moles by sexual life can easily cause malignant changes and form melanoma. Melanoma is a disease with a very high degree of malignancy and a very high mortality rate, so it is recommended that moles be surgically removed to avoid future problems.