The normal labia majora and labia minora of vulva are pink. The common causes of reddened labia majora skin are long-term chronic inflammatory stimulation, labia majora malnutrition, labia majora eczema, chemical stimulation, drug allergy, etc. If you usually have vaginitis, the reddening of labia majora is considered to be caused by long-term stimulation of vaginitis, and its treatment is based on local medication. If you have labia majora malnutrition, it is recommended to pay attention to the intake of nutrients and massage the labia area more often to help relieve the labia malnutrition. Labia majora eczema will be accompanied by itchy skin. It is recommended to first apply furnace glycolic lotion to relieve the symptoms of local itching, and then use ointment for eczema treatment. If it is caused by chemical stimulation, it is advisable to choose cotton, breathable underwear and underwear and to change them every night. If it is caused by the use of drugs, it is recommended to stop using drugs and get anti-allergy treatment as soon as possible.