There is a long hard lump in the left abdomen, commonly in the following cases: 1, feces, commonly in some patients with constipation, especially elderly patients, the abdomen can often be felt as a hard lump, some in the form of a round block, some in the form of a long strip, along the shape of the intestine. 2, abdominal muscles, commonly in patients who exercise regularly and are relatively thin, often the shape revealed by the rectus abdominis muscle, touching up the long, hard lump. 3, may It is an occupying lesion, which may be an occupancy formed in the intestine, outside the intestine, and can be further examined to see if this is the case.