There are many reasons that cause stomach rumbling at night, such as indigestion, starvation, chronic gastroenteritis and so on. 1. Indigestion: due to eating too much hard-to-digest or gas-producing food, such as radish, soy products, etc., the weakening of digestive function, eaten food is not digested in a timely manner, in the stomach fermentation, producing a large amount of gas, resulting in tummy rumbling. 2. Hunger: because of a long time without food, the human body feels very hungry, there may be the symptom of stomach rumbling, and also accompanied by a feeling of hunger, then you can eat something appropriate, after eating the symptoms will gradually disappear. 3. Chronic gastroenteritis: due to gastrointestinal inflammation caused by indigestion, irregular diet or mental stress, etc., there will be a rumbling stomach, may also be accompanied by nausea, abdominal pain, loss of appetite and so on. If the symptoms are not relieved in time, it is recommended to go to the hospital for examination.