A detailed analysis is made of the synoptic features of the 14 thunderstorm events occurred in 2007 summer at Xi’an Xianyang International Airport through the objective analysis of conventional data. The results indicate that the 14 thunderstorm events can be divided into 3 types: cold front, cold vortex, and northwest current, and thunderstorms in 2007 summer have the features of earlier start, increased frequency, longer duration, higher intensity, and being accompanied with severe rainfall. In addition, a case study of the thunderstorm occurred on 8 August 2007, which caused heavy losses for flights delay and communication and navigation equipment destruction, is conducted. The causes for the occurrence and development of this thunderstorm are analyzed from the aspects of weather situation, energy features, physical quantity fields, and radar echoes.