Generating method and device of safety margin and safety operation and maintenance supervisory system

The embodiment of the invention provides a generating method and device of a safety margin and a safety operation and maintenance supervisory system, and relates to the technical field of information system management. The safety margin comprises a business viewing angle safety area. The method comprises the steps of obtaining multiple composition elements in an information system; dividing an overall view according to the application or function viewing angles of the multiple composition elements in the information system, and generating the overall view of the business viewing angle safety margin, wherein the overall view of the business viewing angle safety margin comprises a business service application safety area, a business service application supporting safety area, a zone boundary safety margin, a network communication safety margin, a user terminal safety margin and a safety protection supervisory safety margin, and thus the grading of the hierarchical areas of the composition elements in the inform