The change in taste after pregnancy may be due to the action of estrogen, a physiological reaction to protect the fetus, etc. The estrogen level of pregnant women will increase after pregnancy, and under the effect of hormones, pregnant women will secrete a substance in their body, which will inhibit the secretion of gastric acid, thus having a certain effect on the activity of digestive enzymes and also affecting the desire to eat food, so there may be a situation that the taste becomes bland after pregnancy. In addition, some reactions after pregnancy, such as changes in the sense of smell and taste, may be a physiological reaction of pregnant women to protect the fetus, and pregnant women will actively reject foods that may be harmful to the health of the fetus, such as caffeine, to avoid threatening the fetus in the body. In terms of diet, pregnant women should try to choose foods that are easy to digest, so as to reduce the number of vomiting, to achieve a variety of foods, to ensure the overall intake of nutrients.