The invention the cadastral survey covers information management system, and relates to a method, and a magnetic marker having a magnetic force above a certain surveying reference points pyojigi by which the cadastral survey, pyojigi on the upper surface of the measurement reference point pyojigi position information and the unique number attach a QR code that can be read, the man who measures recognizes the QR code using a smartphone, smartphone with GPS function and sends the current position information and the QR code information in the cadastral survey covers information management server, cadastral survey cover information management server cadastral survey covers administrative Bring the registration cadastral survey covers information colorectal your location information from the database compared with the cadastral survey covers information contained in the QR code information by providing the results to the smartphone, and those who survey baseline survey that covers gigabytes installed on the original registration place, the original place It characterized in that so that you can check whether the installation is moved from.