The invention relates to a fault-recording-based protection action information analyzing method. The fault-recording-based protection action information analyzing method comprises the steps that a configuration model is built; primary equipment serves as the basis, and a configuration model of association among the primary equipment, secondary equipment related to the primary equipment and a protection device is built; the protection action behavior state and sequential relationship of the protection device of the primary equipment and the secondary equipment related to the primary equipment are determined, and the protection action behavior state of the protection device is described with time as the axis; on the basis of the protection action behavior state and sequential relationship of the protection device of the primary equipment and the secondary equipment related to the primary equipment, in combination with protection action behavior logic and related constant-value information in the actual process, the protection action behavior of the protection device is judged, and inverting is performed on the fault process; the result is comprehensively analyzed, and a protection action report is formed. The method obtains data from fault recording, a new means and a new method are provided for protection action analysis in a power grid, and a reference base is provided for protection action behavior judgment after an accident.