In this paper, we prove the following theorem: Suppose that k , n be two positive integers, and a , b , w be three finite complex numbers with an≠bn, wn=1 . If a meromorphic function f(z) and its k-th derivative f(k)(z) share two finite set S1={awi| i=1,2,…, n} , S2={bwi| i=1,2,…,n} , then f(z)=tf(k)(z) , where tn=1. |