Striated hard lumps in the perianal area may be anal fistula, and it is not excluded that it is caused by other reasons, such as perianal abscess, hemorrhoids or anal fissure. 1. anal fistula: in the early stage of the onset of anal fistula, there will be a lump next to the anus, with the gradual development of the condition, the lump will rupture on its own, after which it will gradually shrink and form a strip of tissue. If there is no self-rupture, it can be incised and drained, when the decayed tissue inside is discharged and gradually recovered, it will form a strip-like hard lump in the area. 2. Other causes: perianal abscess will form a circle of hard lumps around the anus, which is hard to the touch and can be pushed, making it difficult for patients to sit still. Hemorrhoids patients will appear in the perianal one or more hard lumps, can also be connected to the formation of cord-like. Anal fissure due to skin tissue tearing, may be formed in pairs of columns of stripes of hard lumps. The above situations, patients are recommended to go to the hospital in a timely manner, can not be based on a single manifestation to determine a disease, should follow the doctor’s instructions to do a systematic examination, differential diagnosis, and give reasonable treatment as soon as possible.