Colic in the right lower abdomen is due to the following causes: first, fecal appendicitis. Due to obstruction of the lumen of the appendix, the tension is increased and the adjacent intestine is also involved, resulting in spasmodic pain in the intestine, nausea, vomiting and fever, and even marked rectal irritation and a feeling of urgency. Ultrasonography may also reveal swelling of the appendix and significant exudative fluid around the appendix. In this case, the appendix should be surgically removed in time, and the symptoms may gradually improve after the surgery. Second, intestinal spasm, gastroenteritis after the pain will also be manifested as colic, and even nausea, vomiting, can choose anti-inflammatory treatment conservative methods. Thirdly, urinary stones, especially ureteral stones, may also cause abdominal cramps, as well as pain in the perineum or groin area, with blood in the urine.