The symptoms of increased gas in early pregnancy may occur, and the probability of occurrence depends on the physical condition of the pregnant woman, care measures and other factors. Under normal circumstances, the weaker the gastrointestinal function of a pregnant woman, the higher the probability of such adverse symptoms. Because of the fluctuation of hormone level and the reduction of exercise in the early stage of pregnancy, women are prone to gastrointestinal dysmotility and peristaltic disorders, and part of the food in the digestive tract cannot be decomposed and transformed in time, which will cause a series of chemical reactions with harmful flora, resulting in a large amount of carbon dioxide, ammonia and other gaseous substances. A large amount of gas will be stored in the lower gastrointestinal tract with the action of peristalsis, and the anal sphincter will be affected by the enhanced internal pressure, resulting in the symptoms of frequent farting and increased exhaust. In addition, in daily life and diet, maintaining a light diet, adequate and regular work and rest, and a relaxed and optimistic mindset can effectively reduce the probability of such adverse symptoms.