Pain on both sides of the back after a painless gastroenteroscopy biopsy may be caused by intestinal spasms or discomfort in the lower back itself. Pain on both sides of the back after a painless gastroenteroscopy biopsy is a normal phenomenon, because colonoscopy is a medical instrument that is inserted into the intestines for examination, and it will not damage the intestines, but it may cause intestinal spasms and other discomforts during the examination. After the examination, there may be back pain, but it will not have a great impact on the body, and it will disappear after one or two days of rest. The pain on both sides of the waist after having a painless gastroenteroscopy biopsy may be caused by the discomfort of the waist itself, and the pain on both sides of the waist after having a painless gastroenteroscopy biopsy, you can go to do an X-ray examination, and if necessary, you can determine the cause of the disease through an MRI. Then you can take some medicines such as fenpropidol, ibuprofen and celecoxib to relieve the back pain. Patients who have pain on both sides of the waist after painless gastroenteroscopy biopsy should listen to the doctor’s advice to do relevant tests to exclude symptoms such as back pain, usually do more outdoor exercise, maintain good living and eating habits, and avoid excessive exertion.