The invention relates to a method for preparing a high performance SmCo permanent magnet material and belongs to the field of preparation of rare earth permanent magnet materials. The method includes that Sm (Col-u-v-wCuuFevZrw) z is used for preparing the SmCo permanent magnet material through processes of smelting, milling, compression molding, sintering, solid solution, magnetic field aging treatment, magnetic field post-heat treatment and the like. The permanent magnet material obtained after the magnetic field aging treatment or the magnetic field post-heat treatment can induce magnetic uniaxial anisotropy in the filed, the orientation degree is increased, so that the magnetic performance of the SmCo permanent magnet material is improved substantially.