The lack of appetite after cardiac mucinous tumor surgery may be related to drug side effects, dysbiosis, diet and other factors, it is recommended to adjust the medication, improve the dysbiosis and diet program. 1. Drug side effects: lack of appetite after cardiac mucinous tumor surgery may be an adverse reaction caused by medication, you can communicate with the attending physician to see if the medication can be adjusted to promote appetite. 2. Bacterial dysbiosis: no appetite after cardiac mucinous tumor surgery may be caused by bacterial dysbiosis, you can take some magnesium aluminum carbonate chewable tablets to protect gastric mucosa, domperidone and other drugs to promote gastric motility to improve. The medication should be directed by a doctor. 3. Diet: the lack of appetite after cardiac mucinous tumor surgery may be related to the type of diet, diet, you can adopt the way of small meals, try to eat some fluids, semi-fluids and other easy-to-digest food first. If the lack of appetite after cardiac mucinous tumor surgery is more serious and cannot be relieved by yourself, you should go to the regular hospital in time.