Hiccups without food are mainly considered to be related to bad habits, mental factors and pathologic factors. 1. Bad habits: Drinking a lot of carbonated beverages without eating can stimulate the gastrointestinal mucosa, leading to an increase in gastrointestinal gas, which in turn triggers the phenomenon of hiccups. 2. Mental factors: a state of mental tension can lead to increased salivary secretion. In the process of frequent swallowing, a large amount of air can be swallowed at the same time, triggering hiccups. 3. Pathological factors: such as reflux esophagitis, chronic gastritis, gastric ulcer, functional dyspepsia, dyspepsia and other diseases, can also lead to hiccups. The symptoms of hiccups without food may be related to other factors, and it is recommended that patients seek medical attention as soon as possible to clarify the cause of the disease and follow the doctor’s instructions for treatment.