Hiccups after cholecystectomy may be due to a variety of factors including postoperative carbon dioxide gas residue, stomach problems, and diet. 1. Postoperative carbon dioxide gas stimulation: During cholecystectomy, carbon dioxide gas needs to be injected into the abdominal cavity to make the abdominal cavity bulge for visualization. After the operation, some of the residual carbon dioxide gas will irritate the diaphragm, causing this phenomenon. 2. Stomach problems: cholecystectomy will cause aggravation of stomach diseases, such as bile reflux gastritis and other diseases, which will cause hiccups after the operation, and it is recommended to go to the hospital to do a gastroscopy to determine whether it is caused by stomach diseases. 3. Diet: hiccups can occur in normal life when the diet is unfavorable, reduce the consumption of cold and irritating food, give more light food, appropriate water, eat more vegetables and fruits. Hiccups after cholecystectomy may be related to other reasons such as postoperative infection, it is recommended to go to the hospital for examination to identify the cause of symptomatic treatment.