A method of updating a list of SaaS and a system for the same are provided. A software server of the present invention updates a software list, in which information about software provided to a user terminal is recorded, on the basis of use information for at least one software program received from the user terminal. The software server includes a receiver that receives software use information, and a processor that determines software to be added to a software list and software to be removed from the software list to update the software list on the basis of the received software use information. Accordingly, software that is provided as a service from a server is automatically updated on the basis of software use information, thus overcoming limitations that are caused by setting a service list according to the individual determination of a manager of the server.