There is a hard lump next to the anus, consider and external hemorrhoids, perianal abscess, sebaceous cysts and other diseases. 1. external hemorrhoids: external hemorrhoids is also a kind of hemorrhoids, hemorrhoids patients long-term constipation, diarrhea, squatting and sitting for a long time, resulting in edema of the perianal skin, can cause thrombosed external hemorrhoids, resulting in local hard lumps. 2. Perianal abscess: Perianal abscess refers to the occurrence of abscess around the rectum and anal canal, infection is the main reason for the occurrence of perianal abscess, resulting in red, swollen, hot and painful lumps around the anus, and there is obvious pain when pressed. 3. Sebaceous cysts: Sebaceous cysts occur around the anus, resulting in localized red, swollen and painful lumps, usually accompanied by significant swelling. In addition to this, there is a hard lump next to the anus, but also to understand whether there is folliculitis, anal fistula of the outer mouth related. It is recommended to go to the hospital to check the cause, and follow the doctor’s instructions to give targeted treatment.