Method for analyzing multi-stage growth evolution normal fault activity space difference

The invention relates to a method for analyzing activity space difference of a multi-stage growth evolution normal fault, which comprises the following steps of: firstly, acquiring geometric characteristics and plane distribution of a target normal fault needing to be analyzed, drawing a target normal fault plane graph, and secondly, defining one end of the target normal fault as a starting end on the normal fault plane graph, sampling section lines are arranged at equal intervals from the starting end along the fault trend; in a seismic section corresponding to the sampling section line, the burial depth of each stratum in a target normal fault ascending disc and a target normal fault descending disc is extracted; then, by means of integrating a fault displacement-distance curve (T-X) to obtain target normal fault segment characteristics, a fault activity period determined by a fault displacement-burial depth (T-Z) curve, difference of fault activity intensities of different parts in different periods reflec