Whether the perianal hard lump can subside naturally, mainly according to its condition, the more common clinical perianal abscess, hemorrhoids, anal fistula, perianal cysts, etc., will not subside naturally, and need to give the appropriate treatment for the cause of the disease. 1. Perianal abscess: belonging to the anorectal peripheral space bacterial suppurative infection, attack will form a hard lump in the perianal area, and accompanied by redness, swelling and hot pain. Most of them do not subside naturally, and need to be given relevant antibacterial drugs to fight infection, such as amoxicillin, cefepime and so on. Serious cases need to be given surgical treatment, such as perianal abscess radical surgery. 2. Hemorrhoids: Hemorrhoids are soft, but hard lumps can appear when blood clots form inside the hemorrhoidal nuclei, more commonly known as thrombosed external hemorrhoids. It can’t go away by itself and needs to be treated with surgical excision. 3. anal fistula: anal fistula fistula from the outside touch hard, and the external mouth of the anal fistula due to long-term stimulation of secretion, the formation of hard lumps, can not go down, need to be surgical fistula excision. 4. Perianal cysts: there is a complete sac, will not subside naturally, need to give surgical treatment, such as cystectomy. The specific situation is recommended to go to the hospital, improve the relevant examination, clear condition, standardized treatment by professional physicians.