Nausea and vomiting in the morning in early pregnancy are the manifestations of early pregnancy reaction, which is mainly related to the increase of HCG in the body. Because HCG doubles in the first 3 months of pregnancy, HCG gradually decreases after 3 months, and early pregnancy reactions will gradually disappear, very few of them will continue until the end of pregnancy, and most of them will be significantly reduced after 3 months of pregnancy. In order to avoid these early pregnancy reactions in early pregnancy, we should pay attention to the diet. It is usually recommended to eat high-protein, low-fat and light food, eat more fruits, eat less and more meals, not too full and not too hungry, and also take some ginger tablets by mouth or vitamin B6 to relieve the nausea symptoms. Pay attention to ventilation in the room, avoid contact with some irritating odors, if the vomiting is more serious, completely unable to eat, weight loss significantly, it is necessary to go to the hospital.