The invention belongs to a method for seismic detection of stratum deformation, and particularly relates to a method for seismic detection of stratum deformation of nontectonic origin. The method is characterized by including the following steps: (1) tectonic horizon interpretation: interpreting a target layer based on seismic data to obtain a target layer tectonic map; (2) edge detection: carrying out edge detection on the target layer tectonic map, calculating the tectonic change gradient, and getting the edge detection result of the target layer tectonic horizon; and (3) qualitative and quantitative characterization: carrying out qualitative and quantitative characterization to get the distribution range and magnitude of stratum deformation. The method can be widely applied to oil sandreservoirs in Canada and offshore oilfields at home and abroad, and has certain popularization value.