The glans is a bit vague and painful, possible causes: a. caused by non-infectious factors, such as local mechanical and physical stimulation, such as excessive masturbation, excessive friction, etc., or there is poor local hygiene, increased prepuce and urine scale, can lead to chronic irritation, vague and painful, not accompanied by obvious redness and swelling, not accompanied by exudation. Physical examination is needed. If you see long foreskin, increased local discharge or slightly red glans, etc., consider that it is caused by local non-infectious factors, and you need to maintain local hygiene. For patients with long foreskin or prepuce, circumcision is recommended for treatment. Second, infectious factors, such as bacteria, fungi, trichomonas, etc., cause local infection resulting in vague pain. The acute phase can be accompanied by swelling and pain, but the non-acute phase only shows a slightly red glans or vague pain, or accompanied by a little exudate discharge and other changes. It is advisable to maintain good personal hygiene and to carry out local secretion smear or swab smear examination to confirm whether there is bacterial or fungal infection, and if necessary, to give anti-infection and external washing treatment.