Frequent hiccups may be a symptom of stomach cancer, which may be caused by eating too much and too fast, or by digestive system diseases such as reflux esophagitis, gastritis, gastric ulcer, stomach cancer, and may be caused by central nervous system disease and mediastinal tumor. Generally, the symptoms of stomach cancer are mainly stomach pain, vomiting blood, black stool, loss of appetite, emaciation and so on. Some patients will have hiccups all the time, but it happens less often. Frequent hiccups are mainly due to the stimulation of diaphragm by food and gas, causing spasm of diaphragm, which is not particularly related to stomach cancer. There are many reasons for frequent hiccups, when patients have frequent hiccups with other stomach symptoms, it is recommended to improve gastroscopy as soon as possible to clarify the cause of lesions as early as possible, and then treat symptomatically to avoid developing into stomach cancer.