Small pouches on the glans are recommended for further examination at the hospital to clarify the possible causes: a. When suffering from glansitis, localized pouches can appear, commonly due to infections such as bacteria, fungi or trichomonas, and can be accompanied by redness and swelling of the glans, or with red spots on the glans. The acute phase can also be accompanied by local changes such as erosion or exudation, which requires pathogenic testing of the relevant secretions for further treatment. Second, if infected with human papillomavirus through unclean sexual contact, a small localized package of glans can appear. At first the volume is small, and then the volume can gradually increase, the surface is not smooth, the formation of cauliflower-like lumps, resulting in local pain, bleeding, or with malodor, etc., need to be local excision pathology to confirm the diagnosis. Third, if there is local mechanical friction or physical stimulation of the glans, there can be local small packets or small herpes-like changes. The flux is single, the blistered herpes is relatively clear, the surface is smooth, and there can be localized pain. Mostly seen in long-term masturbation, after circumcision, the glans repeatedly underwear underwear friction caused.