The symptom of a stuffy stomach in early pregnancy is considered to be a physiological phenomenon caused by early pregnancy reaction. After a woman is successfully conceived, there will be large fluctuations in the levels of progesterone, estrogen, adrenaline and other hormones in her body. The organs and tissues of the body have not yet fully adapted, causing many women in early pregnancy to experience abdominal distention and early satiety, loss of appetite, nausea, vomiting and other adverse reactions. The manifestations of diseases caused by digestive disorders, such as functional dyspepsia, intestinal flora imbalance, superficial gastritis, etc., are not excluded. The presence of digestive system diseases in patients can lead to a decrease in the function of the stomach, intestines and other digestive organs as well as dysbiosis. The excessive fermentation of food in the digestive tract produces a large amount of gas to accumulate locally, triggering symptoms of abdominal stuffiness and distension.