The early symptoms of stomach cancer are not obvious, and some patients may experience bloating and hiccups, but even if bloating and hiccups occur, they are not necessarily the precursor of stomach cancer. A variety of factors may cause stomach distension and hiccups, such as eating gas-producing foods, digestive disorders, reflux esophagitis, gastric ulcer, gastritis, etc.: 1. eating habits: if patients talk a lot when eating or eat too fast, it may cause stomach discomfort after eating, which is manifested as stomach distension and may be accompanied by hiccups; 2. eating gas-producing foods: such as sweet potatoes, potatoes, soybeans, etc., which may cause intestinal discomfort after eating. The gas-producing food, such as sweet potatoes, potatoes, soybeans, etc., can easily lead to the accumulation of gas in the intestinal tract after eating, resulting in gas bloating and burping; 3, digestive disorders: digestive disorders can lead to prolonged emptying time of food in the stomach, slowed gastric peristalsis, and gas stagnation in the stomach, causing gas bloating, and when the gas in the stomach is reversed, it can cause burping; 4, reflux esophagitis: in addition to gastric reflux, the common symptoms of reflux esophagitis are gas bloating and belching. The patient will feel bloated and burped; 5, gastric ulcer: the typical performance of patients with gastric ulcer is stomach pain, and some patients without typical performance only have symptoms of stomach bloating, burping, anorexia, and upper abdominal discomfort; 6, gastritis: acute gastritis will not have stomach bloating and burping. However, patients with chronic gastritis will mostly show symptoms such as stomach fullness, belching and loss of appetite, and patients will feel bloated and burp more often; 7. Stomach cancer: most patients with stomach cancer have no obvious specific symptoms in the early stage, and only some of them show indigestion, in which they will have stomach bloating and burping, in addition to which, they may also be accompanied by loss of appetite and nausea. Therefore, when stomach bloating and hiccups occur, it does not mean that it is the precursor of stomach cancer, but it may also be caused by other conditions; if it happens occasionally, there is no need to be too nervous, but if you have stomach bloating and hiccups for a long time, it is recommended to go to hospital for examination to find out whether it is caused by diseases.