The main object of this paper is to research the liquidity risk management of the open-end securities investment fund in line with the real position of China's securities market and investment regulation of the open-end securities investment fund.So the paper concentrates on discussing the redemption forecasting methods,stock liquidity assessment system,portfolio selection in line with the redemption forecast,and financing from the other institution,which are the main parts of liquidity risk management of the open-end securities investment fund.