[ Purpose/significance] The research aims to propose the multi-granularity integrated knowledge service model to meet the needs of multi-granularity knowledge. [ Method/proces]Firstly, we define the description method, types and entity structure of knowledge element. Secondly, we propose a method of knowledge organization based on ex- plicit and tacit knowledge links, according to extraction, indexing and linking of knowledge element. Finally, we construet "demand - knowledge - resources" mapping to achieve the multi-granularity integrated kn...