Gas in the intestines is caused by indigestion, excessive intake of gas-producing foods, improper eating habits, weak spleen and stomach, etc. First of all, when indigestion occurs, because the food is not emptied in time, so it will ferment and rot after neutralizing with digestive juices, producing a large amount of gas. Secondly, when there is too much gas, it is too late to excrete the gas, so there will be symptoms of intestinal flatulence, such as soybeans, kale, onions and other foods, which produce a lot of gas when digested in the intestines, and once too much of this type of food is consumed, it will lead to a feeling of flatulence in the intestines. Then some people have improper eating habits in their diet, such as talking while eating or fast food intake, which can lead to a large amount of gas entering the intestines along with the food, thus causing flatulence. Finally, some people have a weak spleen and stomach, because the spleen is not able to transport nutrients and water in the body, so it will lead to water and moisture stagnation in the digestive system, which will continue for a long time because the large intestine Qi machine is blocked, causing the symptoms of Qi stagnation and blood stasis, these people are often accompanied by the performance of intestinal flatulence.