Poor stomach and bad breath need to consider the infection of Helicobacter pylori, dyspepsia, constipation, etc., and whether there are organic diseases in the gastrointestinal tract. It is suggested that patients should have gastroscopy and detection of Helicobacter pylori. In case of bad stomach and bad breath, first check whether there is infection of Helicobacter pylori. If there is Helicobacter pylori infection, you can give a quadruple regimen containing bismuth for 14 days. If there is constipation, it can be treated with defecation and intestinal probiotics. Patients should develop good living habits and eating habits at ordinary times, focusing on light, digestible and nutritious food; Drink more water, eat more fresh vegetables and fruits, do not eat spicy and stimulating food, do not eat raw, cold and greasy food, do not drink strong tea, coffee, do not eat chocolate, quit smoking and drink alcohol; Exercise properly, keep a happy mood, and do not stay up late.