Abstract:In this paper, two classes of neutral functional differential equations are considered. The decomposition-aggregation technique, comparison principle and vector Liapunov function method are used to discuss stability of large scale neutral systems. The objective is to consider neutral functional differential equations as large scale systems, and to analyse the stability of the large scale neutral systems in terms of their lower order subsystems and their interconnected structure. Some sufficient conditions such that the zero solution of the large scale systems is asymptotically stable and uniformly stable are obtained. An example is given to illustrate the obtained results.