本文研究了上证50指数、深证100指数和MSCI200只A股上市公司的ESG表现。由于成分股样本特征不同，不同指数下上市公司ESG表现存在一定差异，其中，上证50上市公司的ESG平均得分最高，MSCI200只A股成分股得分次之，深证100上市公司平均得分最低。
The ESG performance of listed companies in SSE 50 index，SZSE 100 index and MSCI 200 A shares was studied in this paper. In consideration of different characteristics of constituent stock samples，ESG performance of listed companies under different indexes may certainly vary. To be specific，ESG average score of listed companies in SSE 50 index is the highest，followed by the constituent stock of MSCI 200 A shares and the average score of SZSE 100 index in sequence.
