Left shoulder pain after cholecystectomy is considered to be related to the way the surgery was performed, frozen shoulder, and compression. The common surgical methods of cholecystectomy are open cholecystectomy and laparoscopic cholecystectomy. 1. Open cholecystectomy: at this time, it is necessary to find the gallbladder through the open for resection, and the postoperative wound will have the possibility of adhesion, which will stimulate the diaphragm and induce the left shoulder pain. 2. Laparoscopic cholecystectomy: In this surgical method, it is necessary to extend the space to complete the surgery through carbon dioxide pneumoperitoneum. At the end of the surgery, part of the carbon dioxide is not absorbed by the body, it will stimulate the diaphragm, thus inducing left shoulder pain. 3. Frozen shoulder: if you exclude the left shoulder pain caused by resection surgery, it may also be due to long-term labor, so that the shoulder muscles are repeatedly stimulated and pulled, resulting in strain on the left shoulder, causing frozen shoulder, which leads to left shoulder pain. 4. Compression: If you often keep sleeping on the left side when resting after surgery, it may compress the left shoulder, which may lead to left shoulder pain, you can adjust the sleeping position and massage appropriately. In daily life, you should do a good job of keeping warm and taking care of the measures, which can prevent as well as reduce the situation of shoulder pain. If necessary, it is recommended to go to the regular hospital to clarify the cause of the disease and give standardized treatment in time.