The Extension of auxiliary shaft is one of the important measures to settle the imbalance of mining and driving in Tonglushan Mine. Through analysing and studying, it is determined to extend the auxiliary shaft with sinking by raising. This way of doing not only may remain the waste hoisting in original level interval, but also can realize the continuous balanced producton. From the view of safetyeconomics fast and simple, the author expounds the method of sinking by raising in the example.