Girls with hard lumps on the lower side are referred to as hard lumps on the pubic area, which may be caused by pubic folliculitis, vestibular gland cysts, condyloma acuminatum and vulvar smooth muscle tumors. 1. Pubic folliculitis: Pubic folliculitis is caused by localized Staphylococcus aureus infection, and patients may have pubic skin pustules or even inflammatory hard nodules. In addition, there will be skin redness, swelling, burning, pressure pain, itching and other manifestations. 2. Vestibular cysts: patients usually show a reddish mass next to the vaginal opening, hard and painful to touch. This is due to the obstruction of the opening of the vestibular gland, the secretion can not flow out of the formation of the accumulation. 3. Condyloma acuminatum: Condyloma acuminatum is caused by human papilloma virus infection, usually manifested as a local single or multiple, papillary or cauliflower-shaped skin growths, accompanied by itching and other discomforts, resembling a hard lump. 4. Vulvar smooth muscle tumor: girls under the long hard pimples may also be benign vulvar tumors, usually located in the labia majora, labia minora and other parts of the vulva, can appear as a smooth surface, hard tumors, tumors, patients will also feel vulvar discomfort, vulvar drop feeling. There are many reasons that cause girls to have hard lumps on their vagina, patients should go to the hospital in time to get a clear diagnosis, and standardize the treatment under the guidance of the doctor.