Hard lumps felt in the anus are usually considered to be caused by constipation resulting in fecaliths, anal gland infections, hemorrhoids or intra-anal tumors. 1. If there is constipation, due to the long-term storage of feces caused by the rectum over-absorption of water, causing fecal calculus. 2. If there is diarrhea and other anal gland infections, the spread to the rectum may cause rectal abscesses. 3. It may be caused by prolonged sitting, squatting, etc. causing perianal varicose veins, producing mixed hemorrhoids, causing thrombosis, accompanied by pain. 4. It may also be due to the presence of tumors in the anal canal and rectum, which can be touched as hard lumps in the anus. In short, there are more reasons for touching hard lumps in the anus, and you should consult a doctor in time, and carry out targeted treatment after a clear examination, so as to avoid causing delays in the condition.