Usually, morning sickness and evening sickness are only differences in time, but they are both early pregnancy reactions and are normal. Most pregnant women will have pregnancy vomiting around the second month of pregnancy, most of them will be more obvious in the morning and alleviated in the afternoon, but there are individual differences, some of them may be more obvious at night and alleviated in the morning, but there is no excessive difference between them. Usually, early pregnancy reactions led by nausea and vomiting, frequent urination and drowsiness will occur in early pregnancy, among which vomiting is the most obvious phenomenon. It is mostly due to the rapid growth of HCG in the body and the sensitivity of the pregnant woman’s body. Pregnancy vomiting will make pregnant women more resistant to food, but they should not stop eating. They need to ensure daily nutrition, adjust the diet structure, match reasonably, and meet the taste of pregnant women as much as possible to slow down the reaction of pregnancy vomiting and ensure the health of the fetus and pregnant women. Some pregnant women may have severe vomiting, so they should pay attention to replenish electrolytes in time to avoid dehydration and electrolyte disorders, and even ketoacidosis. If the vomiting is severe and serious adverse reactions occur, the pregnant woman should seek medical attention and follow the doctor’s instructions. In addition, there are very few cases where vomiting becomes more intense due to improper eating, so you need to adjust the food you eat in time, eat less and more meals, and avoid eating overnight food or unclean food, and eat warm and easily absorbed food, such as millet porridge and chicken soup, etc. At this stage, the pregnant woman’s stomach is more fragile.