| In this paper, using the Nevanlinna theory of the distribution of meromophicfunctions and the investigation skills of complex differential equations, we investigatethe problem of the existense of admissible solutions of a type of algebraic equations,the value distribution of q-difference polynomials and the meromorphic solutions ofcertain q-difference equations. Some results are improved and generalized. This thesisis divided into four parts:The first part mainly introduced the foundation knowledge of Nevanlinna valuedistribution theory including usual notation, definitions and fundamental theorem.Also, we introduced some fundamental theorem of the q-difference.The second part, the existense of admissible solutions of a type of algebraicequations of a class of complex high order differential equations is discussed, Someresults are improved and generalized, obtained the similar results.The third part discussed the zero point of a class of complex q-differentialpolynomial, obtained the similar results with difference polynomials.The fourth part discussed the solutions of a class of complex q-differenceequation, obtained some results. |