At present,the calculation results of large diameter rock-socketed pile rock-socketed depth are deviated greatly.Based on the test results of large diameter rock-socketed pile in Shulanghu mine transfer wharf,the results are compared with the various formulas.It is concluded that the embedded depth of rock-socketed depth is relatively large,and the rock-socketed depth calculated by ZHANG You-ling method is in accord with the actual situation.It is recommended to calculate large diameter rock-socketed pile rock-socketed depth by Zhang You-ling method and give the calculation formula.