Abstract: Based on the observations of lijiang airport in recent nine years (2007 ~ 2015), this paper summarizes the characteristics and patterns of thunderstorms and changes in lijiang airport. The results showed that the number of thunderstorms in lijiang airport in recent years was stable at around 60 d, and the total probability density reached 82. 3% in June and September, and the peak occurred in August. The average thunderstorm was on April 13 th and October 20 th, with an average of 190 d.Look from daily variation, thunderstorms tend to occur in the 15 to 19, reached 48. 7%, total probability density peak appeared in the 16 th, duration within 0 ~ 1h, 58. 7% of the total. Thunderstorm outside change regularity ChuRi with water vapor (relative humidity), 53% ~ 57% relative humidity on rainy afternoon thunderstorm has the certain instruction significance. Thunderstorms in the number of volatile session for the afternoon late into the night, a night of ray conditions have increased, night Laredo for systemic thunderstorms, larger influence on lijiang airport flight.