There may be the following reasons for motion sickness: First, as patients age, there may be a certain decline in vestibular function in some patients, which may manifest as easy disorders of the vestibular nerve, resulting in motion sickness. Second, some patients may usually have poor personal fitness, lack of exercise and lack of movement, and may also be prone to motion sickness after riding in a car. Thirdly, it may be related to the patient’s recent dietary habits, such as eating greasy and fried food recently, having indigestion and other diseases recently, which may also easily induce motion sickness after riding in a car. Fourth, the relationship with the environment in which some patients ride, such as increased air pollution, increased smell of gas and oil in the car, there is some unclean air, also easy to increase the probability of patients appearing motion sickness.