There are many ways to treat hiccups that smell bad, and symptomatic treatment should be given for different causes.1. Indigestion caused by eating too much indigestible food leads to symptoms of hiccups that smell bad. The actual fact is that you will need to pay attention to the diet, eat regularly, have a small number of meals, avoid eating too much at each meal, and avoid eating before bedtime to avoid aggravating the burden on the gastrointestinal tract. It is recommended to exercise moderately after meals to promote the digestion and absorption of food. You can also take oral medications to promote food digestion, such as stomach and appetite tablets, multi-enzyme tablets, hawthorn pills, etc. can relieve the symptoms. 2, certain digestive tract diseases caused by gastrointestinal hypofunction, gastrointestinal peristalsis slowed down, resulting in burping unpleasant taste symptoms, such as gastric ulcer, duodenal bulb ulcer. Patients also suffer from nausea, vomiting, acid reflux, belching and abdominal distension. At this time, you can take oral pro-gastric motility drugs such as morpholine, cisapride and mosapride.