The results of a preliminary study of the interaction of supersonic gas-plasma flows created by a magneto-plasma compressor and a pulsed erosion plasma jet are presented. Stable initiation of the MPC discharge at atmospheric pressure was achieved for the first time. The advantage of using the coaxial arrangement of plasma jets sources for MPC discharge initiation is shown. A noticeable change in the shock wave front velocity and pressure (up to 20%), created during the MPC discharge and dispersed powders and liquid mixtures interaction, is discovered.