Objective To evaluate the treatment outcome of the auxiliary pole in anterior teeth restorations. Methods 98 anterior teeth were chose from 51 patients. They were divided into two groups. Experimental group were composed of 56 teeth. Control group were composed of 42 teeth. The teeth of experimental group were restored using the D.T.Light-Post and auxiliary pole. The teeth of control group were restored just using the D.T.Light- Post. Clinical results and X-ray were recorded after 18 months. Results There was no post crown fall off or loosed in the experimental group, the successful rate was 100.0%. There were one post crown fall off in the control group, and four post crown loosed, the successful rate was 88.1%. The experimental group and control group have the significant differences. Conclusion The D.T.Light-Post and auxiliary pole have good effect on the anterior teeth of residual root.