Most pregnant women can have early pregnancy reactions such as nausea and vomiting around 40 days after menopause. The relief methods are as follows: First, a light and palatable diet can increase appetite, easy to digest and help reduce early pregnancy reaction, and take in as much food as possible to meet nutritional needs. Second, eat less and more meals, pregnant women with heavy early pregnancy reactions should try to choose a diet suitable for their appetite, without emphasizing the regularity of the diet, and transition to a balanced diet after the reactions are reduced. To ensure the intake of sufficient carbohydrates, glucose is the only source of energy for the fetus, carbohydrates provide energy fast and timely, to avoid the lack of use of stored fat to provide energy, the ketones produced by fat decomposition will have a negative impact on the fetal brain development. Fourth, more intake of food rich in folic acid.