以1932年12月25日发生在甘肃省境内祁连山西部的昌马地震(Ms=7.5)造成的宏观地表破裂带的调查与分析为基础,结合有关断裂活动的资料与室内模拟实验结果,本文着重探讨昌马地震发震断裂的构造演化及其应力集中部位的破裂错动过程。从宏观的角度提出了多破裂错动起始点的昌马地震断层模式。 Based on the investigation and analysis of the macroscopic surface rupture zone caused by the Changma earthquake (Ms = 7.5) in western Qilian Mountains on December 25, 1932 in the western part of Gansu Province, this paper focuses on the data about the fracture activity and laboratory simulation results This paper discusses the tectonic evolution of the seismogenic fault of Changma Earthquake and the fault dislocation process in the stress concentration area. From the macroscopic point of view, the Changma earthquake fault pattern with multi-fracture dislocation starting point is proposed.