Frequent belching (hiccups) within three days may be related to mental state, bad habits, reflux esophagitis, chronic gastritis and other diseases. 1. Mental state: when the patient’s mental tension, it will cause increased salivary secretion, frequent swallowing of saliva when swallowing a large amount of air, belching may occur, in addition, long-term mental pessimism, depression, may affect the function of the vegetative nervous system, which in turn affects the normal movement of gastrointestinal tract, resulting in the occurrence of belching. 2. Bad habits: belching may be caused when eating too fast or eating gas-producing food, drinking too much carbonated beverages, overeating leading to indigestion, and the accumulation of food in the stomach and corruption and fermentation. 3. Diseases: Some common gastrointestinal diseases, such as reflux esophagitis, chronic gastritis, functional dyspepsia, etc., due to the stomach and intestines are affected by adverse factors, may produce belching symptoms. It is recommended that patients seek medical examination in time to clarify the cause of the disease and then carry out targeted treatment, pay attention to monitoring the condition in life, and seek medical treatment in time if there is any abnormality.