During pregnancy, due to the change of body hormone level, pregnant women mostly have loss of appetite, nausea, vomiting and other pregnancy reactions, so they like to eat acidic food. However, as the gastrointestinal function of pregnant women decreases during pregnancy, eating more hawthorn may cause indigestion and stomach acid. Moreover, hawthorn can stimulate the contraction of the smooth muscle of the uterus, so a large amount of hawthorn eaten by pregnant women may induce miscarriage. Therefore, pregnant women should eat hawthorn with caution. Pregnant women who eat a lot of hawthorn can produce the following hazards: 1. Excessive stomach acid: Hawthorn has the effect of stimulating the secretion of stomach acid, and after pregnancy, the level of progesterone and estrogen in the body of pregnant women rises, and the fetus continues to develop and compress the stomach, the situation of acid heartburn in pregnant women will be more serious. At this time, a large amount of hawthorn will cause a rapid increase in the concentration of gastric acid, which will easily cause regurgitation and acid vomiting, and can cause peptic ulcers in serious cases; 2, indigestion: hawthorn contains a large amount of fruit acid, which has the effect of astringent and stimulating the gastric mucosa, and can reduce digestion and cause indigestion; 3, excitement of the uterus: modern medical clinical confirmation, hawthorn has a contraction effect on the uterus. Uterus contraction, even lead to miscarriage. In summary, pregnant women should be cautious in consuming hawthorn. For pregnant women who like sour food, it is recommended to choose foods that are both sour and nutritious and have no adverse effects on pregnant women instead, such as green apples and tomatoes.