Prevention of altitude sickness: 1) Just entering the plateau, you should be slow rather than fast, don't walk fast, let alone run, and you can't do manual work. It is best to have a thorough rest for half a day. 2) The temperature difference at the plateau is particularly large, and it is easy to catch a cold. Warm measures should be taken to prevent colds and respiratory infections caused by colds. Cold is one of the main causes of acute high altitude pulmonary edema. 3) Don't overeat, so as not to increase the burden on the digestive organs. It's best not to drink or smoke. 4) Eat more foods rich in vitamins such as vegetables and fruits. Drinking more water can effectively keep water in the body and increase the body's resistance. 5) Start taking drugs to prevent altitude sickness in advance, such as Om Yanglan tablets, American ginseng, glucose solution, etc.