Poor appetite in the 4th month of pregnancy is related to the pressure on the stomach caused by the enlargement of the uterus after pregnancy, which can be improved through dietary modification and appropriate activities. 1. Dietary modification. Poor appetite in the fourth month of pregnancy is mainly related to the fact that the enlarged uterus in mid-pregnancy presses on the stomach, resulting in a smaller stomach capacity. First of all, it is recommended that the diet should be light, as little as possible to eat greasy and indigestible food, to do small meals, you can eat easy to digest pasta, rice porridge, egg custard, and fish, lean meat, etc., with dietary fiber-rich fresh vegetables and fruits, eat the food you like to eat. 2. Appropriate activities. 4 months pregnant uterus enlargement oppression of the stomach, resulting in slow gastrointestinal peristalsis, coupled with the activities of pregnant women is relatively small, there will be poor appetite, loss of appetite phenomenon. It is recommended that pregnant women should be appropriate activities, such as walking or yoga, swimming exercise, etc., appropriate exercise can promote gastrointestinal peristalsis, but also consume a certain amount of physical strength, improve the phenomenon of poor appetite.