Most women start to experience nausea and dry vomiting around 6 weeks of pregnancy, which is a common manifestation of early pregnancy reaction. Nausea and vomiting in early pregnancy is generally thought to be related to human chorionic gonadotropin (hCG), altered thyroid function, and psychological and social factors. Most of the nausea and vomiting appear in the morning, the symptoms are mild with loss of appetite and occasional nausea, while the severe ones can be dry vomiting and vomiting, or even violent vomiting, the severity of which varies from person to person, and the treatment varies. 1, pregnant women only have the symptoms of nausea and dry vomiting, which generally do not affect normal life and disappear on their own around 12 weeks of pregnancy, and do not need to be treated; 2, pregnant women with nausea and vomiting need to eat a reasonable diet and pay attention to a light and palatable diet. Pay attention to the light and palatable meals, easy to digest, which is conducive to reducing the pregnancy reaction. The number, quantity, type and time of meals should be adjusted according to the appetite of the pregnant woman and the severity of her reaction, so as to ensure the amount of food eaten. Family members need to pay attention to the mental state of pregnant women, give spiritual comfort and encouragement; 3, if vomiting is more frequent and intense, resulting in the inability to eat and drink normally, serious and continuous nausea, vomiting, may cause dehydration, resulting in water-electrolyte disorders in the body, this situation should immediately seek medical advice to clarify the cause, symptomatic treatment.