The invention relates to an intelligent security and protection method and system. The intelligent security and protection method comprises the following steps: deployment simulation, wherein a central controller calls offline map data in a storage server, sets alarm areas and shielded areas, drags electronic sentry post marks into the alarm areas for the deployment simulation, and saves a determined deployment plan in the storage server; deployment detection; and alarm execution. The security and protection method has the advantages that geographic information is firstly acquired, the electronic sentry post icons are dragged onto a map through a system platform for the deployment simulation, and whether the deployment plan has vulnerabilities or not can be examined; onsite deployment of electronic sentry posts is then carried out according to the deployment plan to enter a real-time detection stage, and alarms and intervention are executed when an invasive target is detected; and therefore, high convenience, high efficiency and high adjustability are achieved.