Hiccups are normal when you are full. When a normal person is full, the volume of the stomach will become larger, especially after eating too much food, the enlarged stomach will stimulate the phrenic nerve, making the diaphragm spasm and hiccups, so it is normal to have hiccups when you are full. Or when the patient consumes too much gas-producing food, the digestion of food produces a large amount of gas, which will also cause the patient to have hiccups after eating enough. However, if the hiccups are very frequent and persistent, it is necessary for the patient to go to the hospital for examination to diagnose whether the patient has other stomach diseases, such as: chronic gastritis, gastric ulcer and other diseases, which can also lead to hiccups when the patient is full. If the patient only hiccups occasionally, there is no need to worry, but if it is frequent hiccups it is best to go to the hospital for a checkup to ensure good health.