The 1992 Landers earthquake area is chosen as the test field for the newly developed wave-equation based traveltime seismic tomography. The details of data selection, synthetic arrival-time determination, and trade-off analysis of damping and smoothing parameters are presented to show the performance of this tomographic inversion method. High-resolution crustal structures around the 1992 Lander earthquake area are obtained and help our understanding of the physical mechanism of the earthquakes.