Because of the loose subcutaneous tissue of labia minora, it can easily lead to edema, and there are various reasons for labia minora to become bigger, including puberty development, contact stimulation, infection, mosquito bite, injury, etc., which need to be dealt with according to the reasons. 1, puberty development: normal women’s bodies will develop secondary sexual characteristics between 10-18 years old, and the labia minora will increase and thicken, and the degree of development varies from person to person, and some women’s labia minora can be bigger than labia majora. The labia minora can be larger than the labia majora, as long as there are no other disease signs and it does not affect normal life, there is no need to deal with it; 2, contact stimulation: walking legs friction, inappropriate underwear, sanitary napkins and other stimuli can lead to congestion, redness, swelling and pain of labia minora, generally removing stimuli and improving walking can slow down the symptoms; sexual intercourse, masturbation can cause congestion and swelling of labia minora, the behavior stops, restoration After calming down, congestion disappears and labia minora can return to normal; 3. Infection: vaginitis, vulvovaginitis, urethritis, etc. can cause secondary infection of labia minora, with typical inflammatory manifestations such as redness, swelling, heat, pain, etc. Generally, there can be abnormal vaginal discharge, odor or painful urethral irritation, which requires removal of the original disease, and antibiotics are available for treatment, vaginitis and vulvovaginitis can be applied locally with antibiotic ointment to reduce swelling as soon as possible; 4. Mosquito bites: often occur in the field environment when using the toilet, can cause the labia minora side or bilateral swelling, local bulging, not serious, can wait for its natural remission, scratching ulceration can be timely medical treatment, under the guidance of a doctor; 5, injury: common in the riding injuries, production injuries, causing the labia minora congestion and swelling, more trauma history, childbirth history, disinfection and hemostatic conditions can be cold compresses, after the receding of swelling and pain. After the swelling and pain recede, hot compresses can be applied to promote blood circulation, and antibiotics can be used according to medical advice. The labia minora of women are generally symmetrical on both sides, but some abnormal development can lead to abnormal enlargement of the labia minora, which can affect walking, sexual intercourse and even fertility, and plastic surgery can be performed in hospital. If there are other abnormalities or discomfort, please seek medical attention promptly and check for vulvar tumors, such as smooth muscle tumors.