[Purpose/significance]The purpose of this paper is to provide a reference for the subject construction and the library information resources allocation of the domestic aviation colleges.[Method/process]In this study, we analyze the subject characteristics of domestic aviation colleges through extracting literature subject classification codes in EI journal papers of aviation colleges, using word frequency statistics, word co-occurrence analysis method and social network analysis method. Besides, the Pearson correlation coefficiency was introduced, and the characteristics of interdisciplinary integration of aviation colleges under the condition of strong related disciplines were obtained by the central feature of the network map. [Result/conclusion] The result shows that the subject characteristics of domestic aviation colleges appear the long-tail distribution and the Pareto law. The subject association forms four subgroups and six categories in the knowledge co-occurrence map.