摘要：該文主要研究以下兩類非線性復(fù)差分方程an(z)f(z+n)^jn+…+a1(z)f(z+1)^j1+a0(z)f(z)^j0=b(z),an(z)f(qnz)^jn+…+a1(z)f(qz)^j1+a0(z)f(z)^j0=b(z),其中,ai(z)(i=0,1,…,n)與b(z)為非零有理函數(shù),ji(i=0,1,…,n)為正整數(shù),q為非零復(fù)常數(shù).當(dāng)上述方程的亞純解的超級(jí)小于1并且極點(diǎn)較少時(shí),對(duì)解的零點(diǎn)分布進(jìn)行了估計(jì).此外,當(dāng)亞純解具有無(wú)窮多個(gè)極點(diǎn)時(shí),也對(duì)極點(diǎn)收斂指數(shù)給出下界.