Heartburn in pregnant women is a burning sensation behind the sternum that is often felt after pregnancy, and even a feeling of pressure and pain that extends from the sternum to the throat. Heartburn in pregnant women is related to esophageal reflux, where acid reflux stimulates the pain receptors in the lower part of the esophagus, causing the so-called “heartburn” sensation. There are various reasons for heartburn, specifically the following: 1, most cases are caused by improper diet, such as the one-time intake of more irritating foods, such as ginger, chili, garlic, wine, etc.; 2, the long-term diet structure is not reasonable can also cause chronic gastric disease and indigestion symptoms, after pregnancy, the pregnant woman’s diet structure has changed greatly, in order to ensure the nutrition of the fetus, pregnant women often strengthen nutrition, the intake of food is also greatly increased. The intake of food is also greatly increased, causing a certain burden to the gastrointestinal tract. When too much food accumulates in the gastrointestinal tract and cannot be digested in time, it will form chronic gastric disease and cause heartburn in pregnancy; 3. Because the placenta produces a kind of progesterone during pregnancy, the pregnant woman’s cardia is in a relaxed state, so that the gastric contents reflux into the esophagus causing heartburn; 4. With the prolongation of pregnancy, the pressure in the abdominal cavity will rise, which will also cause the gastric contents to reflux into the esophagus and even reach the throat and mouth.