Abstract: In order to remedy the defects of researches high-level fabricated steel frame system at home and abroad， and provide the basis for the development and design of multi-story industrialized prefabricated steel frame structure system at the same time，the finite element software ANSYS 14. 0 was used to make the static analysis and pseudostatic analysis of prefabricated steel frame taken from the actual project which is single-bay，two-layer and single-span steel frame． The energy dissipation capacity and ductility performance of the frame under low frequency cyclic loading were studied，and the bearing capacity and failure mechanism of the frame were analyzed．Research shows: prefabricated steel frame has good deformation performance，under the earthquake action，at the truss beam end plastic hinge forms to consume energy，the hysteretic curve of prefabricated steel frame is full，showing good plastic deformation and energy dissipation ability．