Abstract: This paper analyzes the thrust deformation features of the Jinfosi pluton in the eastern Jiuquan Basin which were controlled by the effect of late regional structure, and presents the deformation mode of the pluton, by investigating the field deformation features and interpreting the seismic profiles which passed the pluton. The authors consider Jinfosi pluton was influenced by intensive thrusting action，and the average distance of thrusting was more than 15km．Controlled by the main thrust fault and secondary thrust faults, the interior pluton had been deformed intensively，and a complex fault-propagation fold was formed．Under the main thrust fault is a part of the Mesozoic and Cenozoic foreland depression of Jiuquan Basin，had been changed into a fault-propagation fold Cenozoic foreland depression of Jiuquan Basin.