Based on 77 listed companies of IT industry on China＇s GEM，this paper analyzes its regional distribution，patent application，invention patent authorization，international application behavior and technology evolution. The results show that IT industry of GEM is in a boom at present; the listed company mainly distribute in Beijing，Shanghai，Guangdong，Jiangsu and Zhejiang area; the number of patent application is growing every year and more invention patent has been applied for; the rate of patent authorization gradually increases; the international patent application behavior is closely related to the international strategy of enterprise; technology evolution is closely linked to social development.
