Controlled directional borehole drilling is often used in drilling engineering. In directional drilling， acquisition of borehole inclination and azimuth， installation angle of the deflecting tool， and hole bottom real time position（bore hole depth） are very important. Russian drillers have developed an automatic system integrating information， procedure and navigation used for directional drilling， which is of great significance for increasing drilling efficiency， guaranteeing borehole quality， and improving technical and economic indexes. It can provide some reference for Chinese counterparts.