Stomach heat halitosis is an abnormal odor in the mouth caused by stomach heat. There are many causes of bad breath, such as eating spicy and fishy salty foods, long-term smoking and alcohol abuse, lack of oral hygiene, gastrointestinal diseases, lung diseases, or rhinitis. The treatment of bad breath with stomach heat. First of all, pay attention to personal oral hygiene, brush your teeth before and after meals, rinse your mouth to keep it clean. Avoid eating raw, cold, irritating, smelly (such as onion, ginger, garlic, stinky tofu, etc.) indigestible, greasy high-fat food. Chew and swallow slowly when eating, drink more water, eat more fruits and vegetables and legumes. Eat more food rich in fiber, or chew gum to promote saliva secretion in the mouth, because saliva also helps the role of digestion. Live a regular life, keep your mood relaxed, and participate in outdoor sports appropriately. If bad breath is still not reduced, we recommend that you go to the hospital gastroenterology or respiratory medicine for further detailed examination to find out the specific cause for symptomatic treatment. It is important to pay attention to avoid aggravation of the condition. In summary, the main treatment for bad breath with stomach heat can be summarized as follows: a light diet, attention to oral hygiene, and treatment of the original disease.