The Rayleigh-Ritz variational method is used with a multiconfiguration-interaction function and restricted variation method to obtain the energies of 2p2np4So(n=2—4)and 1s2pmp4Ｐ(m=2,3)in lithium-like ions,including the mass polarization and relativistic corrections.Oscillator strengths,transition rates,lifetimes and wavelengths are also calculated.The results are compared with other theoretical and experiment data in the literature.