Loud hiccups may be caused by improper diet, peptic ulcer, functional gastrointestinal disease and other reasons. 1. Improper diet: if you eat too much potatoes, onions and other gas-producing foods at one time, the gas will come back upward and stimulate the diaphragm to spasm, which may cause loud hiccups, accompanied by abdominal distension, etc., which can be relieved after the food is digested and absorbed. Usually pay attention to regular meals, avoid eating too much soybean and other easy to produce gas food. 2. Peptic ulcer: due to inflammation stimulation of diaphragm spasm may appear hiccups loud, hiccups longer, there may also be acid reflux and other symptoms. You can use omeprazole to inhibit gastric acid, reduce the stimulation of gastric mucosa by gastric acid and relieve the inflammatory reaction. 3. Functional gastrointestinal disease: slow peristalsis of the gastrointestinal tract, food can not be digested and absorbed in a timely manner after eating, fermentation in the body to produce gas, the gas back out of the hiccups may be loud. You can use domperidone, mosapride, etc. to promote gastrointestinal peristalsis, accelerate gastric emptying, reduce reflux. Hiccups may also be caused by cold, indigestion, etc. If it is difficult to relieve frequent hiccups, you should consult a doctor to find out the cause of the hiccups under the guidance of the doctor and carry out reasonable treatment, so as to avoid delaying the condition.