Each entire beam path static wavefront of technical integration experiment line (TIL) was obtained by the wavefront measurement system in the target chamber. The result was transited to wavefront sensor in the main amplifier diagnostic package. Based on the deformable mirror at the injection of main amplifier and the wavefront sensor placed at the diagnostic package,the wavefront of entire beam path was corrected with closed loop. A charge coupled device (CCD) was placed at the target point to monitor the laser farfield. As result shows,the energy concentration had visible improvement. The method effectively improves control ability of laser facility entire beam wavefront by small deformable mirror which meets the requirement of physical experiment.