【Purpose/significance】 The construction of the library short video promotion ability evaluation model can guide the library

to formulate and improve the corresponding promotion plan, improve the promotion effect, and build a more harmonious library short video ecology.【Method/process】 Through literature investigation and expert investigation method, based on information ecology theory, a library short video promotion ability evaluation model for managers is constructed from the perspective of resourcecompetition-reproduction. and selected the two public library Douyin accounts of "Hubei Provincial Library" and "Shanghai Library",and used the multi-level fuzzy evaluation method for empirical evaluation.【Result/conclusion】 According to the proposed promotion ability evaluation model, empirical evidence shows that Hubei Provincial Library has relatively high promotion ability.【Innovation/limitation】 The innovation of this article is from resources, competition and reproduce three-dimensional view to a more comprehen⁃sive system to examine short video library promotion ability, lack of subjective evaluation method is adopted, can try to evaluate the methods more objectively in the future.