Abstract:As the rapid development of science and technology, accurately understanding and evaluation to technology innovation capability is the premise to enhance the technology innovation capability in electric enterprises. This paper establishes a set of index evaluation system of electric enterprise's technology innovation capability by screening and analysis the innovation ability evaluation index of electric enterprise on the basis of technological innovation capability of electric enterprises and their characteristics. And then, according to the evaluation index system, for the first time propose that use cloud model to evaluate technology innovation capability , also ,analyzing and judging the model in an objective way. Finally, from case analysis, this paper gets an evaluation result to enterprises' innovation ability and proves the correctness of cloud model, at the same time, proposing some measures to increase the technology innovation capability of electric enterprise.