Abstract: 【Purpose/significance】As the high-level development form and ultimate development goal of the library, the construction process and development path of the smart library determine the starting point and end point of building a new library intelligent knowledge service system, the reconstruction and the innovation of the knowledge service model has played a vital role in enhancing the experience of smart library service objects.【Method/process】Construct a knowledge ecosystem model based on ecological theory,study the operation laws of individual knowledge of smart libraries in the knowledge ecosystem, and promote the evolution of knowl⁃edge populations to the goal of ecological ordering, thereby providing systematic guarantee and data support for the innovation of knowledge service model of smart library.【Result/conclusion】Use the self-organization and self-adaptive characteristics of the knowl⁃edge ecosystem to activate the intelligent organization attributes of knowledge data elements, making it possible for smart libraries to provide more targeted, innovative and intelligent knowledge service solutions for knowledge service objects.【Innovation/limitation】A systematic approach is used to realize the ecological process of the knowledge community in the smart library to support the innovative ecosystem solutions of the knowledge service model, but the specific process of system implementation is not discussed deeply.