The 1 10 combination of the National Social Security Fund is the fund code of the social insurance fund. The basic principle of social security fund investment operation is to realize the appreciation of fund assets on the premise of ensuring the security and liquidity of fund assets. The state stipulates that social security funds can enter the stock market, of course, not all, and there are proportional restrictions. The main purpose is to maintain and increase the value of social security funds and ensure the interests of the people. The Ministry of Finance and the Ministry of Labor and Social Security shall formulate relevant policies on the management and operation of social security funds and supervise the investment, operation and custody of social security funds. The China Securities Regulatory Commission and the People's Bank of China shall, according to their respective functions and powers, supervise the business activities of investment managers and custodians of social security funds. Specific operation of social security fund: the investment scope of social security fund directly operated by the National Social Security Fund Council is limited to bank deposits and the purchase of government bonds in the primary market. Other investments that need to be managed and operated by the social security fund investment manager and entrusted to the social security fund custodian.