High-altitude airports are vital to local economic development, but temperature anomalies has a direct impact on operational efficiency and safety. The statistical analysis of the temperature data of Nyingchi Airport from 2006 to 2020 shows that the temperature rise is slow from January to August, and the temperature drop is fast from September to December. The daily range of the airport is the smallest in summer, about 10 ° C, and the largest in winter, about 15 ° C. Airport low temperature days (daily minimum temperature < 0℃) are concentrated in December and January. High temperature days (maximum daily temperature > 20℃) are concentrated in June to September. The average temperature of the airport showed a slow rising trend, about 0.22℃/15 years, 0.28℃/15 years in summer, and 0.51℃/15 years in winter.