There are two reasons for lack of appetite during pregnancy, one is caused by hormonal changes in the body after pregnancy, and the other is caused by gastrointestinal diseases. The former is a normal reaction during pregnancy and usually disappears gradually after 3 months. However, the latter is a pathological symptom, and the time of disappearance is related to the regulation method. Most pregnant women will have a decreased appetite in the first trimester, which is due to the increased level of human chorionic gonadotropin and is a physiological reaction during pregnancy. Pregnant women do not need to worry too much, after the third month of pregnancy, the chorionic gonadotropin will stop rising and the appetite will slowly return to normal. However, if the loss of appetite is caused by gastrointestinal diseases, the time of disappearance of the symptoms is uncertain, and the pregnant woman needs to actively regulate her gastrointestinal system in order to restore her appetite to normal. For physiological loss of appetite during pregnancy, no treatment is needed, just try to ensure a light and nutritious diet. For pathological loss of appetite, we need to go to the gastroenterology department to identify the cause of the disease, and then target the treatment, and also to ensure that the diet is soft and easy to digest.