Digital expropriation and demolition spatial data management method

The invention relates to a digital expropriation and demolition spatial data management method. The method is characterized by comprising the following steps: acquiring multiple types of expropriation and demolition survey data; obtaining a project created by a project group, and set project basic information, a project element classification and grading template, a project attribute public field, a visual style and a project participant role template; obtaining project participants added by the project group and project roles allocated according to the project participant role template; processing each piece of expropriation and demolition survey data according to a normalization processing rule; importing global unified and standardized expropriation and demolition survey data formed through normalization processing into a standard database, carrying out separation with projects as units, and achieving isolation control over the data; acquiring a corresponding project selected by the project group, and impo