Enterprise annuity insurance refers to a form of old-age insurance established by enterprises and their employees on the basis of participating in basic old-age insurance according to national policies and economic conditions of enterprises, aiming at improving the living standards of employees after retirement, and is an important supplement to the national basic old-age insurance.

The enterprise that handles enterprise annuity must be an enterprise that has handled social security and established a collective negotiation mechanism. Besides enterprises and employees, enterprise annuity also involves trustees, account managers, custodians and investment managers. The trustee may entrust the relevant financial institution to manage the personal account of the fund, trust the fund property or be responsible for the investment management of the fund. There is a balance among the account manager, custodian and investment manager-the account manager is mainly responsible for checking the summary data of payment and has no access to the fund property; The custodian is mainly responsible for keeping the fund property and supervising the investment behavior of the investment manager, and has no right to control the fund property; The investment manager is mainly responsible for fund investment, and is responsible for maintaining and increasing the value, but he has no control over the use of the fund and no right to use the fund property.