The skin ulcers on the inner labia minora may be related to viral infections and injuries if they occur occasionally, and there may be immune diseases if ulcers occur regularly due to: 1. injury factors, anatomically speaking, the inner labia minora is not easily damaged, and ulcers can be formed if mucosal damage is caused accidentally. 2. viral infections cause ulcers, the most common viruses are herpes simplex virus and gonorrhea virus, The most common viruses are herpes simplex virus, gonorrhea virus, it is recommended to go to the hospital for relevant laboratory examination, if necessary, you can take oral anti-viral drugs and use local anti-viral ointment for treatment. 3, caused by immune factors, the inner side of labia minora is mucous membrane tissue, ulcers are likely to occur frequently when the immune system is abnormal, ulcers of labia minora and mouth ulcers occur on the same principle, it is recommended to go to the hospital immune department for consultation.