Abstract: To provide a system capable of executing a project of constructing a basic system accurately at a lower cost and in a shorter period. There are provided a system construction guide server in which work plan information for constructing a predetermined system is registered, and an operator terminal operated by an operator performing a work to the target system based on the work plan information. The system construction guide server has a function of presenting the work plan information to the target system corresponding to an access from the operator terminal, and the work plan information includes work content information indicating work contents for constructing units constituting the target system.