Abstract:Considering the knowledge sharing ability comprehensively from the social cognitive theory, social capital theory and technology acceptance theory, starting from the two levels of knowledge generation ability and knowledge diffusion ability, the construction includes 2 first-level indicators, 6 second-level indicators and 23 indicators The attribute WeChat public account knowledge sharing capability evaluation index system uses the entropy weight method to determine the index weights at all levels, and builds a WeChat public account knowledge sharing capability weighted comprehensive cloud evaluation model. Taking the WeChat public account "Global Science" as an example, the detailed process of the knowledge sharing capability evaluation is elaborated, and the weighted comprehensive cloud model evaluation value of the "Global Science" knowledge sharing capability is obtained, and the knowledge sharing of "Global Science" is further enhanced according to the evaluation results Ability to make rational suggestions.