The grid current of a Vienna rectifier will change from the continuous conduction mode (CCM) to the discontinuous conduction mode (DCM) when the load current or the inductance decreases. This deteriorates the grid current. Therefore, a strategy based on the variable duty ratio feed‐forward and quasi‐proportional‐resonant (QPR) combined control is put forward, by introducing the needed duty ratio to the original output of current inner loop, whereby the pressure of the inner loop is effectively reduced. The working mechanism of the Vienna rectifier is first analyzed. The transfer functions of CCM and DCM between duty ratio and grid current are then built. At the same time, the parallel multi‐QPR harmonic compensators are adopted in the current inner loop to effectively eliminate the specific harmonic pollution. To verify the correctness and effectiveness of the proposed strategy, a 5.3‐kW prototype under digital control is established. The simulation and experimental results show that both the steady and transient performance of the proposed strategy are better under the fixed current inner loop parameters, the current zero crossing distortion can be eliminated, and the current quality acquired under the transformation between CCM to DCM can be further improved.