There are various evaluation methods, and their classifications are different according to different classification standards. Generally speaking, the evaluation of enterprise competitiveness is a complex system, and it is often difficult to make a scientific evaluation using a single indicator, so most enterprises adopt a comprehensive index system evaluation method. Exploring a model or method that can weigh the advantages and disadvantages of various methods, so that the advantages of each method are complementary, is of great significance to the evaluation of low-carbon competitiveness of enterprises. In this paper, a systematic combination evaluation method is used to evaluate the goal of "low-carbon competitiveness of sample companies". The systematic combination evaluation method introduces the combination idea into the evaluation field, and then generates new evaluation ideas and evaluation methods. The advantages of the combination idea are: first, the combination of multiple evaluation methods can complement each other's strengths and learn from each other; second, the combination can obtain more evaluation information to make up for the incompleteness of the information; third, it can also eliminate the disadvantages of inconsistent evaluation results make the evaluation results recursive. <<