The construction investment and system performance determine to a large extent the success or failure of building DAS. The features， requirements and networking mode of the distribution communication network and commonly used means are described， and the multi-index evaluation thought of combining the qualitative and quantitative analysis together to assess different communication means is proposed. An evaluating index system for wireless communication means is provided， including three factors， economy， reliability and technology. At the same time， the preferred DEA method is introduced into the estimate system to comprehensively evaluate the benefit of the evaluation model. The preferred feature can resolve the problems in combining qualitative and quantitative analyses， and the nondimensionality resolves the errors brought about by multi-index conversion into each other in evaluation. Finally， the method is applied to planning for a certain city's communication network of DAS and the communication means with the highest benefit index will be selected as the preferred means.