Backfill mining is a new technology to reduce the waste of mineral resources and environmental protection; it has good social and economic benefits. The complex formations of Xitieshan lead-zinc mine and tight schedule made the construction difficult. By the optimized combination of drilling technologies, drilling tool gradation matching and optimization of drilling parameters in the construction process, the construction is completed. In addition, the targeted combination is adopted in hole deflection control and measurement, which provides the favorable technical support for hole deflection control.