To provide an investment trust accounting management system which can accurately grasp process of paperwork operation for investment trust accounting.

The investment trust accounting management system 10 is provided with a data receiving part 11 which receives input data for accounting process of investment trust, an balance calculating part 12 which calculates balance of incorporative funds, a basic price calculating part 13 which calculates basic price per unit of investment trust funds, an investment trust information DB 15 which stores input data, the balance of holding funds, and basic price, an operation status managing DB 18 which stores the operation status, an operation status managing part 17 which manages the operation status, an display part 20 which displays the operation status, and input part 19; and the data receiving part 11 is provided with a contract input processing part 11a which receives the contract information, a market price receiving part 11b which receives market price information, and an addition/cancel receiving part 11c which receives addition/cancel information.