In order to improve the fine structure inversion ability of igneous rocks for the exploration of underlying strata. based on particle swarm optimization (PSO). we have developed a method for seismic wave impedance inversion. Through numerical simulation. https://www.diegojavierfares.com/flash-offer-A-D-EJ-123-Newton-Compact-Balance-Scale-120-x-0-001-g-hot-grab/