There are soybean-sized hard lumps within the muscles of the anal opening without pain, which may be rectal polyps, condyloma acuminatum, anal papillae hypertrophy and so on. 1. Rectal polyps: Rectal polyps belong to the abnormal growth of tissue, generally asymptomatic, can appear in the anus bulging lesions, touching can be touched one or more small lumps of flesh, relatively hard to the touch. 2. Acute warts: this is infected with the human papilloma virus caused, in the early stages of the disease, in the patient’s anus or perineum there will be a papillary bumps, at this time the general sense of pain and itching is not obvious. With the aggravation of the disease, it will evolve into cauliflower-shaped bumps, and the pain will gradually increase. 3. Anal papilla hypertrophy: related to tissue proliferation or inflammation and infection, due to repeated stimulation, it will lead to the gradual enlargement of the anal papilla, forming the phenomenon of anal papilla hypertrophy, generally there will be anal discomfort and increased secretion and other phenomena. When the above situation occurs, it is suggested that patients should consult the doctor in time, do systematic examination, clarify the cause of the disease, and give appropriate treatment as soon as possible.