Shoulder string gas pain after ectopic pregnancy surgery may be caused by shoulder strain and cold due to long operation time, or the pain may be caused by hypercapnia due to laparoscopic surgery. Laparoscopic ectopic pregnancy surgery usually uses carbon dioxide gas to establish a pneumoperitoneum, which puffs up the abdomen in favor of surgical operation. Carbon dioxide gas can be absorbed into the bloodstream to form carbonic acid, and carbonic acid will lead to postoperative shoulder pain, and the pain symptoms will be relieved when carbonic acid is exhaled out of the body by the lungs after 2-3 days; Surgery under anesthesia for a long time to maintain the supine position, and the shoulder area needs to be abducted, or long-term braking will cause shoulder pain; surgical process indoor temperature is too low will lead to the shoulder of the cold, postoperative pain will also occur. Shoulder pain after ectopic pregnancy surgery is best to go to the hospital for a relevant examination to diagnose the cause of the disease, under the guidance of the doctor symptomatic treatment, to avoid delaying the condition, causing adverse consequences.