PURPOSE: To easily assist progress control by a software development system by automatically collecting data required for the progress control over the manufacture and test and displaying them on a terminal.

CONSTITUTION: A manufacture progress information collecting part 6 automatically collects progress information on the program which is being manufactured at a program development part 10 and registers it in a progress information file 3. A test progress information collecting part 7 automatically collects the progress information on the program which is being tested at the program development part 10 and registers it in the progress information file 3. A progress information display part 8 collates expectation data which are previously set in a design information file 2 with the result data in the progress information file 3 and displays the progress state on the terminal 1.