The CSI 300 Index can be used as an evaluation standard for investment performance and provides basic conditions for index investment and index derivative product innovation.

Significance: 1. It can have an exciting effect on the market that has been weak for a long time.

2. Unqualified stocks will be continuously eliminated and qualified sample stocks will be introduced.

A number of sample stocks with blue-chip characteristics will gradually be cultivated in the domestic market.

3. It has laid the foundation for the establishment of independent main board and GEM index systems in the future.

4. It is expected to promote the merger of the Shanghai and Shenzhen A-share markets and promote the birth of the national main board market and GEM market.

4. Sounded the clarion call to solve the institutional problems of the securities market through financial innovation.

5. Provide a target for stock index futures.