In order to reduce the APF control error caused by sampling rate, a method of predictive hysteresis control based on current prediction is proposed. The cause of hysteresis control error is analyzed. On the basis of the active filter dynamics model, output current prediction model is established, the target current is predicted by linear interpolation, and the working principle of this control method is introduced. A controller system is designed based on the CompactRIO. The experimental result comparisons between the proposed method and traditional hysteresis control show that the proposed method is effective in reducing control error.