Sufficient conditions are obtained for the existence of bounded positive solutions of the n - order delay differential equations with nonlinear neutral term , on the basis of lebesgue ' s monotone convergence theorem and banach contraction theorem 摘要利用控制收敛定理和压缩映射原理研究了一类具非线性中立项时滞微分方程有界正解的存在性，获得了其存在有界正解的充分条件。
