There are many causes of vomiting, such as pregnancy vomiting, acute gastroenteritis, motion sickness and so on, which need to be taken according to the different causes of dietary regimen, given medication and rehydration and so on. 1. Pregnancy Vomiting: Pregnancy Vomiting is a kind of early pregnancy reaction, which mainly occurs in the early stage of pregnancy. It usually manifests itself as aversion to oil, nausea, vomiting and other discomforts. In early pregnancy, we should pay attention to eat a light diet, eat small meals, avoid fasting in the morning, which is conducive to reducing early pregnancy reaction. 2. Acute gastroenteritis: it is an acute inflammation of the gastrointestinal mucosa, usually caused by eating cold or unclean food. Patients may have severe abdominal pain, nausea, vomiting, may be accompanied by diarrhea. Severe cases should be temporarily fasting, while using levofloxacin, montelukast, oral rehydration salts for treatment. 3. Motion sickness: Motion sickness is a kind of vertigo, which is a general term for motion sickness, seasickness, airsickness and other diseases caused by various reasons, and is caused by vestibular dysfunction of the ear. The treatment of motion sickness commonly used drugs such as diazepam. There are differences in the disposal of vomit for patients with different types of diseases, vomiting a bed of vomit, it is recommended to go to the hospital in time to avoid delays.