In this paper, we first systematically select indicators from four dimensions, namely, financial, environmental, social and innovation, to build a framework for evaluating the performance of green transformation of enterprises. It integrates the mutation level method and entropy weight method, and at the same time introduces the cloud model to solve the conversion problem between qualitative evaluation and quantitative data. Taking the panel data of enterprise A from 2020 to 2024 as the empirical object, the results show that the innovation performance of enterprise A is the core driving force of transformation, with a weight of 0.3777. From a comprehensive point of view, the evaluation result of enterprise A’s green transformation performance is “yellow (good)”, close to “green (excellent)” and “green (good)”. “Green (excellent)” grade, but there are structural differences among the dimensions.