Abstract: After the repair of the main and andauxiliary shaft of Banji coal mine,The diameter of the shafts are reduced。In particular, after the repair of the auxiliary shaft, it is still inclined and curved.Under the circumstances,through systematic planning,we solved the problems of shaft section layout, ability restoration and correction design.In the end, the main and andauxiliary shafts were successfully pgraded. Provide a strong guarantee for the coal mine to resume production and maintain production capacity.