Abstract: According to the constructing characteristic and possible major engineering geology problems in the tunnel anchor engineering of Barlinghe Bridge, on the basis of research state of detective technology for injecting effect, the synthesis detective technology was adopted, in which directive method was connected with indirective method, and indirective method was the main method. The detection was done through core-drill method, comparison analysis of detective data of before-after injecting by geology radar, and comparison analysis of data by acoustic wave computer-graphic technology. In the end, definite detective conclusion and corresponding constructing way were suggested.