The paper took the consolidation grouting project of diversion tunnel at Xiangcheng hydropower station which will be the grid generation as research object.It mainly used geological radar, and assisted acoustic detection and borehole water pressure detection to detect the consolidation grouting project of diversion tunnel in the condition of a variety of surrounding rock. Through the treatment of radar detected data, the paper summarized the characteristic of image of the defect and density section of consolidation grouting of radar detection,and verified the radar image through the tests of borehole water pressure and acoustic detection.The result detected by acoustic wave has certain relation with the image of geological radar.The permeability rate gotten by the test of borehole water pressure has no clear link radar image. This paper presented the quality standards of consolidation grouting project by geological radar detection after comprehensively considering test result.The standards are that sampling length should be not less than 5% of the total length,there is no empty phenomenon behind the lining. The grouting quality that is in accordance with the above requirements can be evaluated as qualified.