中文摘要：

本文运用Nevanlinna值分布理论及差分类的对数导数引理，给出了微分-差分方程存在有限级整函数解和亚纯函数解的一个必要条件．同时还给出了微分一差分方程的Clunie引理，Mohon’ko—Mohon’ko引理等．

英文摘要：

In this paper,we give some necessary conditions on the existence of entire and meromorphic solutions of finite order of differential-difference equations by using the Nevanlinna＇s valve distribution theory and difference counterpart of the lemma on logarithmic derivative. We also give Clunie lemma, Mohon＇ko-Mohon＇ko lemma of the differential-difference equations.