Pregnancy is not recommended to take motion sickness drugs, motion sickness drugs are H1 receptor blockers, the most commonly used of which are phenobarbital and scopolamine tablets. Phenobarbital has a sedative and hypnotic effect, and scopolamine has a central nervous depressant effect, can reduce the sensitivity of the vestibular nerve as well as inner ear function, and has a certain inhibitory effect on gastrointestinal motility. Both drugs can circulate through the placenta and have effects on the placenta and central nervous system, especially when taken early in pregnancy, which may lead to abnormal development of the baby and adverse pregnancy outcomes such as miscarriage or fetal developmental malformations. When pregnant women have mild symptoms of motion sickness, they can buy some plums or their favorite candy to prevent motion sickness and are advised to sit in a ventilated place before departure. If there are precursors of motion sickness, you can choose to smell some stimulating scents such as orange peel or mint to play a role in waking up the brain. Avoid eating greasy, spicy and irritating food before riding in the car, and do not eat too much or be very hungry before riding, do not use too much electronic devices such as cell phones during the journey, minimize head movement, lean your head against the back of the window seat and close your eyes to rest. In the middle and late pregnancy, when the symptoms of motion sickness are more serious and the pregnant woman must take drugs, she should use them reasonably under the guidance of a doctor and only occasionally and in small doses to avoid affecting the development of the fetus due to improper use of drugs.