An embodiment of the invention discloses a static state safety analysis method and apparatus for a regional power grid considering backup power automatic switching, for solving the problem that inconsistency exists between the static state safety analysis and the actual condition caused by the fact that a backup power automatic switching condition is not taken into consideration in failure analysis of the current regional power grid by BPA software. The static state safety analysis method provided by the embodiment comprises the steps of disconnecting a fault element; performing load flow calculation; analyzing an operational result; performing logic determination on a data card recognition condition; determining an isolated node generation condition; determining an isolated node state; determining a sub system generation condition; determining a sub system state; and closing condition determination of a backup buscouple switch. According to the static state safety analysis method and apparatus for the regional power grid considering the backup power automatic switching, influence to a wire frame from the action conditions of the backup power automatic switching and other automatic equipment is taken into consideration, so that complete consistency between the static state safety analysis and the actual condition is realized, thereby improving the power supply reliability of the regional power grid and the safety operational level of the power grid.