Fecalithic appendicitis may lead to back pain, but usually does not lead to leg pain, which may be due to lumbar disc protrusion, osteoporosis and other reasons. The formation of fecaliths in the appendiceal cavity can cause the appendiceal contents to drain into the cecum, causing localized bacterial infections and the formation of fecalithic appendicitis. When fecalithic appendicitis occurs in the posterior cecum, it can lead to low back pain, accompanied by abdominal pain, fever, nausea, vomiting and other symptoms, but usually does not lead to leg pain. Patients with back and leg pain may also be due to lumbar disc herniation, resulting in lower limb nerve compression and thus pain; osteoporosis patients may appear in the back and leg parts of the soreness of the situation. Patients with long-term symptoms of low back and leg pain should go to the hospital for examination and treatment in time to avoid delaying the condition.