The　random　ground　motion　simulation　method　based　on　the　finite　fault　model　is　one　of　the　proven　methods　in　the　field　of　simulating　high　frequency　ground　motion.　Taking　the　extreme　earthquake　zone　of　the　Tangshan　earthquake　in　1976　as　the　research　goal,　by　combing　the　research　results　of　the　predecessors,　the　calculation　model　of　the　target　zone　was　established　and　the　parameters　of　the　source　model　were　determined.　The　local　site　data　and　the　site　dynamics　parameters　of　the　target　zone　were　utilized.　The　quarter-wavelength　method　is　used　to　obtain　the　local　field　amplification　effect　parameters.　The　strong　ground　motion　simulation　results　of　Tangshan　earthquake　are　given　by　using　the　stochastic　finite-fault　model.　The　reliability　and　applicability　of　the　method　is　confirmed　by　comparing　with　the　historical　seismic　macro-intensity.　The　results　will　help　improve　the　seismic　design　accuracy　of　the　project　in　areas　lacking　strong　vibration　observation　records,　and　have　certain　reference　value　and　engineering　significance　for　the　development　of　urban　earthquake　prevention　and　disaster　prevention　measures.　©　Published　under　licence　by　IOP　Publishing　Ltd.