Abstract：In the paper, we summarized the gale characteristics,which were caused by the Matsa tropical cyclone over Zhejiang Province in 2005, and analyzed their formation. The characteristics show that the long period of the gale duration, the large scale of time and space of the gust are rare in the history. The analysis revealed that the intensive Matsa is the basic factor. Matsa's north-westward track and slow moving velocity ensured the gale persistence. The interaction between neighbouring systems is the main direct cause of gale unsymmetrical distribution. The special terrain of Zhejiang Province was also availed to occurrence of gale unsymmetrical distribution.