Nausea and vomiting after sitting in a car is mainly caused by the wrong perception of the state of motion, it is recommended to eliminate the disease through general treatment, medication and so on. 1. General treatment: After sitting in the car after motion sickness nausea and vomiting, you should stop reading, playing cell phones and other behaviors in a timely manner, back against the back of the chair, watching the distant stationary objects. If conditions allow, you can immediately get off the car, looking for a cool ventilated place, lying down with eyes closed. 2. Medication: If the symptoms still do not improve, you can also seek medical attention as soon as possible, under the guidance of medical personnel to use drugs to anti-dizziness and vomiting. Common drugs are theophylline tablets, scopolamine, guillizine, domperidone and so on. To summarize, nausea and vomiting after riding in a car belongs to a relatively common disease, which will bring a lot of inconvenience to life, and in serious cases, dehydration, coma, respiratory difficulties and other problems will occur. Therefore, when the disease persists for a long time, you must not hold on, and should seek medical treatment as soon as possible.