Nd2Ir2O7 which is a kind of pyrochlore iridate compounds has strong spin-orbit coupling(SOC).Since exotic phases of matter such as topological insulator,Weyl semimetal,and chiral spin liquid are predicted due to the strong SOC,we try to put Nd2Ir2O7 into a high pressure environment to change the electron-electron interactions which the strong local Hubbard repulsion U between electrons occupying the same orbital is the most important.