Qualified domestic institutional investor's investment scope includes domestic securities companies, fund management companies and futures companies. A financial institution that supports mutual recognition of fund products between the Mainland and Hong Kong, meets the conditions stipulated in Article 2 of the Trial Measures for the Administration of Overseas Securities Investment in qualified domestic institutional investor, raises funds in People's Republic of China (PRC) with the approval of the China Securities Regulatory Commission, and manages overseas securities investment by combining part or all of the raised funds, is called qualified domestic institutional investor. The concept of QDII refers to an institutional arrangement that allows domestic investors to invest in overseas capital markets in a controlled and selective way under the conditions of incomplete currency convertibility and capital and financial account control, so as to achieve the purpose of orderly guiding and reasonably restricting overseas capital investment, preventing the impact of concentrated outflow of foreign exchange resources on the economy, preventing the risks of overseas securities investment and protecting the interests of domestic investors. At present, commercial banks, trusts, securities, funds, insurance and other financial institutions can apply to become qualified domestic institutional investor.