In this paper, the relevant faulting and rupture-scale parameters of 30 large earthquakes were systematically collected and compiled. Considering the uncertainties of these parameters, 10 000 Monte Carlo realizations were generated consistent with the ranges of data, and for each a standard least-squares technique was used to find the coefficients of regressions. The result suggests that the empirical relationships developed in this paper are suitable very well for estimates of the seismic hazard on mapped active strike-slip faults in West China.