Purpose/Significance To investigate and analyze the influence of different psychological cognitive factors on public health information acquisition behavior,so as to provide a basis for establishing a new health information service model.Method/Process A theoretical model of the correlation between psychological cognitive factors and health information acquisition behavior is constructed through literature review,a structured questionnaire is designed,and partial least squares structural equation modeling is used to test the correlation between psychological cognitive factors and health information acquisition behavior.Result/Conclusion The hypothesises of the correlation between information overload, information anxiety, information avoidance, and public health information acquisition behavior are valid,and they have negative impact on it,leading to the public making decisions that are detrimental to their own health.