Abstract: In this paper, the parallel direct integration method for solving, the dynamic equations of lorge-scale structure. Based on the one-step direct integration method presentedby L. Brusa and L. Nigro, the parallel operational step is introduced into the algorithm.The parallel operational step includes dividing the dynamic integral equation into substructures and concurrent assembly and condensation. The program of this algorithm has been implemented on the ELXSI-6400 parallel computer in Xian Jiaotong university. The computational results show that the CPU time can be saved. The parallel direct integrationmethod for solving the dynamic equations of large-scale structures in finite element method is of efficiency.