The main causes of enlarged labia minora are pathological and physiological factors. Due to various pathogenic microbial infections caused by vaginitis, vulvitis, inflammatory secretion stimulation of the labia minora area caused by local congestion and edema; sexual life in the process of improper force or lasting too long, friction stimulation of the labia minora area, caused by labia minora congestion and edema; due to the frequent wearing of too much tension in the underwear, or panties are not air permeable, or wearing in the tight jeans, will easily lead to labia part of the friction stimulation of the external forces This can lead to congestion and edema of the labia due to external friction. In this case, when there is obvious abnormal secretion, you should go to the hospital in time for routine secretion laboratory tests, give medication after a clear diagnosis, and you should pay attention to good personal habits, try to wear loose and comfortable underwear with good ventilation, and avoid excessive friction and stimulation during sexual intercourse.