When plateau reaction occurs, rest, oxygen, symptomatic treatment and oxygen should be administered immediately if necessary. Plateau reaction is the symptom of headache, blurred vision, fatigue, nausea and vomiting, chest tightness, and even respiratory difficulty, etc., which is manifested when the patient enters the plateau above 2700 above sea level from the plain. Measures should be taken immediately to relieve the patient’s symptoms. 1. Rest: When patients have plateau reaction, they should immediately stop activities, bed rest, and can supplement glucose and other liquids to relieve symptoms. Observe the patient’s condition closely, and the symptoms can be relieved after resting. 2. Oxygen intake: For patients who go to plateau for the first time or have basic diseases, it is difficult to improve with obvious chest tightness and shortness of breath with rest, oxygen intake treatment should be given. 3. Symptomatic treatment: the individual differences in plateau reaction are large, and the symptoms are different, in addition to the basic rest, rehydration, oxygen, should also be symptomatic treatment. For example, if you have a headache, improve the pain; if you have nausea and vomiting, give gastric protection and so on. The body should be fully assessed before entering the plateau. If you feel unwell after entering the plateau, you should stop your activities in time and seek medical attention to avoid delaying your condition.