[Purpose/significance] This paper makes a statistical study of Chinese periodical papers published in the CNKI database. [Method/process] Based on the method of literature metrology for the quantitative analysis of the domestic research of knowledge service, this paper made an analysis in terms of literature sources quantity distribution, journal distribution, core authors, highly cited documents, high frequency keywords, research scope and the service object. [Result/conclusion] Analysis and point out the lack of research: Knowledge service has not yet formed a unified consensus, the lack of systematic research, theory more than practice and guidance is not strong, the lack of effective evaluation mechanism. Based on the results of the analysis, this paper discusses the trend of the development of the knowledge service, so as to provide a reference for further research.