There is a small hard lump in the anus, need to consider the existence of external hemorrhoids, perianal abscess, warts and so on. 1. external hemorrhoids: if the nodule without pain, combined with blood in the stool, need to consider the possibility of external hemorrhoids, or by the stool stimulation, the formation of thrombus in the hemorrhoidal nucleus after strenuous exercise, touch is a small piece of hard matter, feasible anorectal examination after further clarification. 2. perianal abscess: if the anus at the hard nodule has redness, swelling and fever, swelling, discomfort, pain and other manifestations, need to consider the possibility of perianal abscess, can further improve the blood routine, pus bacterial culture. 3. Condyloma acuminatum: If there is a combination of papillary, cauliflower-like hard lumps in other parts of the external genitalia, and at the same time there is abnormal secretion, you need to consider the existence of condyloma acuminatum, you can further improve the HPV examination. If there is a small hard lump in the anus, it is recommended to consult a doctor as soon as possible to further clarify the cause of the disease, and follow the doctor’s instructions to actively cooperate with the treatment, so as not to delay the aggravation of the condition.