Old hiccups saliva secretion is considered to be caused by physiological factors, may also be reflux esophagitis, chronic gastritis and other disease factors. 1. Physiological factors: eating too fast, too much or drinking too much carbonated drinks can cause hiccups; at the same time, if eating too much acidic food, wearing dentures or orthodontic appliances for a long time can also cause an increase in salivary secretion, which ultimately leads to hiccups and saliva secretion. 2. Reflux esophagitis: Reflux esophagitis when the stomach contents into the esophagus, pharynx and even the oral cavity after stimulation of the oral mucosa caused by increased salivary secretion, can also be accompanied by hiccups, acid reflux, heartburn and other symptoms. 3. Chronic gastritis: chronic gastritis can cause increased secretion of gastric acid in the stomach, gastric acid secretion to a certain extent can cause acid reflux, gastric acid back to the oral cavity can appear saliva secretion increase, while chronic gastritis with gastrointestinal peristalsis abnormalities can produce a large amount of gas resulting in hiccups. After excluding physiological factors, it is recommended to go to the hospital in time and follow the doctor’s instructions for active treatment.