(1). Keep warm. There is a great temperature difference between day and night on the plateau, and the temperature is low in the morning and evening. Generally, every time the altitude rises 1000m, the temperature drops by 6℃, so be sure to keep warm. Even in summer, you must prepare a coat or sweater. It is very cold to stay in the dark temple hall for a long time. Besides, it is also important to keep your body dry.

(2) Strong sunlight and ultraviolet rays on the plateau will harm the eyes. You should prepare a sun hat and sunglasses. There are many ice and snow environments in Tibet. Snow and ice areas and water surfaces will reflect strong sunlight. Sunny days can directly expose your eyes to this environment for several hours, which will cause snow. Therefore, you must wear snow goggles, or at least good sunglasses that can filter ultraviolet rays, when you are in the snow line and above. Snow can cause temporary blindness, with mild symptoms such as sensitivity to light, blinking, sand in eyes, pain, redness and tears. In case of snow, wash your eyes with eye drops, go to the dark or cover your eyes with an eye mask and ice with a cold towel to reduce the use of your eyes and try to rest. Good rest and soothing environment can relieve the symptoms of snow in time, but it usually takes 5 ~ 7 days to fully recover.

(3) Contact lenses are not suitable for various tourist routes in western Hechuan and Tibet, because of the large tip soil and poor sanitary conditions. If you want to wear it, consider using disposable lenses. Contact lenses are sold in Lhasa, and the price is comparable to that in the mainland.

(4) When I first went to the plateau, due to the dry climate, some tourists were prone to nosebleeds and chapped lips. At Gongga Airport, tourists with burned cheeks and noses can often be seen leaving Lhasa. So bring sunscreen, lotion and lip balm.

(5) Bring some topical nasal ointment and throat lozenges to relieve the discomfort of nose and throat caused by dry mouth.

(6) It is suggested that you consider taking the following drugs: Jin Shi 'erkang, American ginseng buccal tablets, aspirin, Bilitong, Niuhuang Jiedu tablets, Ganmaoling, pharyngitis pills, Zhike dew, Baihua oil, vitamin C pills, stomach medicine, gauze, eye drops and anti-inflammatory drugs.

(7) It is recommended to prepare small medicine boxes of different sizes, with the big ones in the backpack and the small ones carried with you.

(8). Be careful of heatstroke. The sunshine on the plateau is terrible, especially the long outdoor activities in summer. Therefore, you must prepare cool oil, pills and the like for outdoor travel on the plateau, and drink plenty of water. If you find someone suffering from heatstroke, you should move it to a cool and ventilated place as soon as possible, lift your head and shoulders and lie down, take off your coat and wet the patient's underwear with water, constantly fan the wind, and wipe the patient's body with a cold towel to reduce the patient's body temperature. When the patient is awake, he should replenish water.