There are many reasons for pain on both sides of the navel, the common causes are: 1, urinary system diseases, such as bilateral urinary stones, especially ureteral stones, can cause bilateral pain and discomfort on both sides of the navel, and even back pain, nausea, vomiting, etc. 2, gynecological diseases, such as bilateral adnexal inflammation, ovarian cyst torsion, tubal pregnancy, pelvic inflammatory disease, uterine fibroids, etc. 3, acute and chronic gastroenteritis, intestinal inflammation when it can The pain and discomfort on both sides of the navel or even around the navel can be caused by stimulation of the nerves in the intestinal wall. 4. acute appendicitis, when appendicitis occurs, there is usually typical pain around the navel, metastatic right lower abdominal pain, and finally pain fixed in the McKay’s point. 5. intestinal obstruction or intestinal tumor occurs, when the lumen of the intestine, especially the transverse colon, narrows, and the stool block cannot pass through the intestinal lumen to stimulate the nerves in the intestinal wall, it can cause pain on both sides of the navel.