This article chose the self-developed YQH-100-type oil-gas mixed pump as a research object,and selected the Mixture model,k-ε turbulence model and 3 schemes through addingskirtto different locations on the top of rotor vane to carry out the numerical simulation under the condition that the GVF were 0,10%,30%,50%,70%,and the performance curves of the oil-gas mixed pump under the three different skirt structure were plotted,respectively.The curves indicate that the second scheme(adding the skirton the suctio...