To investigate fast simulation method taking Non-stationary and spatial effect of actual ground motion, directly solving the equations of ground motion through absolute displacement does not decompose the absolute displacement into quasi-static and dynamic relative displacement, and avoids solving the static influence matrix. Non-stationary excitation response is converted into the transient solution under a series of deterministic external force actions. Based on general-purpose finite element software ANSYS transient analysis module as a platform, a large mass subjected to pseudo excitation load is put on structure support and it is conducted to directly solve method, Improving the computational efficiency of random vibration response, efficiently combining multi-dimensional and multi-support non-stationary pseudo excitation method and general-purpose finite element software, avoiding special preparation, Simplifying implementation method, and making pseudo excitation method further expanded in the theory and engineering application.