In ultrafast optical coherent control, the existence of the phase distortion and phase inconsistence on fundamental frequency and its second harmonic generation laser wavefront leads to fail to achieve the desired experiment results in most cases. An experimental method in diagnosing such distortion situation was designed to make an effective auto-control system applied sucessfully in the coherent control photocurrent experiments. The retrieval algorithm was used, and the spatial surface structure was calculated based on the relationship between the beam intensity and phase difference, thus the voltage or direction was achieved. In this way, the mobile-mirror moves to less aberration. The mentioned experimental result proves that the system can adjust the two wavefronts being parallel automatically in real time.