Causes of bad breath that stinks like poop include poor diet, indigestion, and Helicobacter pylori infection. Dietary adjustments and medications can be taken. 1. Improper diet: If the patient likes to eat durian, stinky tofu, sour bamboo shoots, onions and other foods, it will produce halitosis as smelly as stool. Patients can reduce the intake of the above stimulating flavor foods, or take oral mints, mouthwash, and brush their teeth to reduce the odor. 2. Indigestion: When the patient’s stomach and intestines are indigestible, the food accumulates in the stomach for a long time and will ferment the odor. Patients can take massage abdomen, increase exercise, drink more water to promote gastrointestinal peristalsis, accelerate the body’s metabolic ability, or take mosapride tablets, gastrointestinal tablets, domperidone and other drugs to promote gastrointestinal peristalsis, digestion, and reduce the accumulation of food in the body. 3. Helicobacter pylori infection: When Helicobacter pylori bacteria multiply in the stomach, there will be the above symptoms. Patients can reduce bad breath by treating H. pylori. Generally, the clinical choice of oral clarithromycin, metronidazole, omeprazole, bismuth potassium citrate and other drugs to remove H. pylori. There are many other causes of bad breath like stool, such as oral diseases, chronic enteritis, digestive tract tumors, reflux esophagitis, etc. If the patient has bad breath like stool, and the odor cannot be reduced after changing dietary habits and lifestyle, it is recommended to go to the hospital in time for blood tests, 13C breath test, gastroenteroscopy and other tests to clarify the cause of the disease, and then follow the doctor’s instructions for treatment.