With the rapid development of power electronic technology, power system increased the number of non-linear load. But the traditional diode's and thyristor's rectifier may cause voltage and current distortion, polluting power grid (especially the interface between kinds of electronic equipments and network that produced large amount of harmonic pollution or low power factor). The three-phase Voltage Source Rectifier of PWM can realize the sinusoidal input current, and make the grid voltage and current with the same phase. This article introduce the three-phase Voltage Source Rectifier of PWM from the topology of main circuit, working principle, mathematical model, control strategy (SVPWM) and parameter design. The double closed-loop control (current inner loop and voltage outer loop). Using MATLAB7.6 to simulate the main circuit rectifies and get the results of simulation and experiment. Waveform parameters proved the correctness and feasibility.