A engineering method to suppress current harmonics in permanent magnet synchronous motor (PMSM) was presented. The 5 and 7 current harmonics were extracted through coordinate transformation and the lowpass filter, the compensation harmonic voltage was solved by the 5 and 7 harmonic steady state voltage equations, and the harmonic component of motor current was suppressed by injecting the compensation harmonic voltages into SVPWM calculation reference voltages. The experimentation results demonstrated that the proposed method was effective.