Regurgitation and vomiting after riding the bus are considered to be caused by motion sickness, poor digestion, chronic diseases of the stomach, etc. Patients are advised to take motion sickness medication before the bus ride, and if they have stomach-related diseases, they need to visit the gastroenterology department in time to clarify the causes and give reasonable treatment. Common causes and treatment 1, motion sickness: due to the bumpy bus, the air inside the bus does not circulate for a long time, and there is less fresh air, which can easily lead to the performance of regurgitation and nausea. For this group of people, you can paste motion sickness tablets behind the ears before the bus, or take motion sickness medicine, which can effectively relieve the symptoms of motion sickness; 2, over-eating: eat too much before the bus, the food eaten can not be well digested and absorbed in the stomach content, and when riding the bus due to the more bumpy, the stomach content stimulates the stomach and cardia, which can easily lead to the appearance of regurgitation and vomiting. Patients should promptly get off the bus, find an airy place, sit down and rest to relieve symptoms; 3, chronic diseases of the stomach: patients with chronic gastritis, gastroesophageal reflux disease, gastric ulcer and other chronic diseases of the stomach, poor digestive function, the food eaten can not be well digested, absorbed, only long-term accumulation in the stomach, in the bus ride more bumpy, easily lead to regurgitation, nausea symptoms, may also be accompanied by stomach pain. Patients should promptly go to the hospital for examination, such as gastroscopy, H. pylori test, etc., to clarify the cause of the disease, and can follow medical advice to use the appropriate drug treatment. If patients experience mild motion sickness while riding in a car, they should immediately stop reading books and cell phones and focus on looking at the horizon or distant stationary objects, lean back in the seat as far as possible, keep their heads still, and if the situation allows, lie flat and close their eyes best. When patients have severe dizziness, nausea, vomiting, cold sweat, etc., they should promptly get out of the environment, such as getting out of the car, and go to a well-ventilated place to lie down and rest.