Abstract:On the basis of theoretical analysis, this paper puts forward the service-oriented technology innovation system of science and technology service industry by referring to the three-spiral structure of science and technology innovation system, constructs the service innovation evaluation index system of science and technology service industry from three aspects: the development potential of service innovation industry, the ability of service innovation resource input and the ability of service innovation achievement creation, uses improved CRITIC-VIKOR method to evaluate the innovation ability of science and technology service industry in China. According to the empirical research, the service innovation ability of the four economic regions in China is significantly different, among which the service innovation ability of the eastern region is the strongest and leads by a large margin, while the western region is the worst and stagnates. It is suggested that China should actively implement the national strategic decisions, narrow the gap of service innovation ability in various regions, and promote the balanced development of regional economy.