To reduce the burden imposed on a developer by realizing a software development method dynamically combining elements such as a development process and a software structure.

This software development supporting device is provided with database 7 storing development process information 13, software structure information 14, and quality control information 15, a session control information storage part 17 storing history information of working processes including work item information produced in selecting the software structure information 14 in a process of developing the software, and a Web server part 11 determining the working process based on the history information of the working processes controlled by the session control information storage part 17 according to a request for the software development processing start and outputting the work items of the database.