A soybean lump in the external vaginal opening may be a vestibular gland cyst, folliculitis, warts, etc., which need to be examined in the hospital to clarify the cause of the disease. 1. Vestibular cyst: It is caused by the obstruction of the opening of the vestibular gland duct, the secretion can not be discharged, and accumulated in the gland cavity. Patients can see a lump on the vulva, and if infection occurs, the lump can gradually increase in size. 2. Folliculitis: most folliculitis is mainly caused by bacteria, fungi and other pathogens caused by hair follicle infection, patients can see the red papules around the hair follicle, sometimes accompanied by itching, pain and other discomfort. 3. Condyloma acuminatum: a sexually transmitted disease caused by human papillomavirus infection. Patients can see papules, papillae or cauliflower-like organisms around the genitals. There are many possible reasons for the appearance of soybean-like lumps on the external vaginal opening, and the patient needs to consult a doctor for examination and clarification of the cause of the disease, and treatment under the guidance of the doctor.