There is a hard thing under the clitoris may be sebaceous cyst, hard chancre, folliculitis and other causes, through surgical removal, medication to deal with. 1. Sebaceous cysts: The sebaceous gland ducts of the vulva are blocked by chronic inflammation of the vulva, so that the glandular fluid cannot be discharged, and cysts are formed over time, which are manifested as a hard thing under the clitoris, and surgical excision is a more effective treatment. 2. chancre: chancre is a manifestation of early syphilis, chancre mainly occurs in the perineal genital area, the beginning of the manifestation of red small papules, papules gradually expanding to form nodule-like hard knots, touch and cartilage hardness is similar to the clitoris occurs under the clitoris, preferred benzylpenicillin intramuscular injection treatment. 3. Folliculitis: the hair follicles of the skin below the clitoris are infected by bacteria and suppurative inflammation occurs, starting with red pimples, slowly developing into pustules, usually isolated, with fusidic acid cream, erythromycin ointment and other medications. There are more reasons for hard things under the clitoris, and it is recommended to seek timely medical treatment for serious cases.