主要研究亚纯函数及其n阶导数的分担值问题，改进了仪洪勋、杨重骏等人的定理，得到了以下结论：设f，g为开平面上两个非常数亚纯函数且IM分担∞，f (n)与g(n) IM分担1，n为正整数，如果(4n+7)(∞,f)+4δ(0,f )+2δ(0,g)>4n+12，则fg或者f (n)·g(n)1.%Researching into the meromorphic functions and the shared value of its n-th derivatives, this pa-per amends the theorems of H. X. Yi and C. C. Yang etc and obtains the following result: given: f and g are two non-constant meromorphic functions in the complex plane, plus f(n) and g(n) IM share 1 (n is a positive integer). If (4n+7) (∞,f)+4δ(0,f)+2δ(0,g)>4n+12, then either f(n)·g(n) 1 or f g .
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