Bad stomach, heavy breath, bad breath can be improved by adjusting the diet, medication and other methods. 1 light diet: three regular meals, eat less stimulating spicy food, usually pay more attention to maintain oral hygiene, appropriate exercise to promote gastrointestinal motility. 2. medication: if caused by indigestion, you can take lactobacillus tablets and gastrointestinal tablets and other drugs; if caused by gastritis, you can consider taking pantoprazole, bismuth potassium citrate, amoxicillin and other drugs. The above medications should be used under the guidance of a medical professional. Bad stomach, heavy breath and bad breath may also be related to other causes, and patients are advised to go to the hospital in time for standardized treatment by the doctor.