Abstract: The frequent occurrence of atmospheric pollution, especially severe hazy-fog weather, has caused people to worry about and discuss environmental issues. The central government will solve the problem of haze-fog as a breakthrough in environmental governance. However, there is a significant lag in the public’s participation in governance and personal protection.There is even nothing to do. Based on the KAP theoretical model, the paper adopts questionnaire follow-up survey and regression testing methods, and mainly analyzes the aspects of health protection awareness, environmental attitudes, haze-fog cognition, and protection behavior of urban residents’ haze-fog. The results showed that: self-protection awareness and environmental attitudes will have a positive and significant effect on the protection behavior of urban residents against haze-fog,and there is a direct impact on the cognition of haze-fog. Among them, the basic cognition of haze-fog and the cognition of haze-fog harm have a significant positive effect on the protection behavior of urban residents against haze-fog. The cognition of haze-fog causes has no obvious effect on the protection behavior of urban residents against haze-fog.Therefore, it is necessary to strengthen publicity, strengthen the basic understanding of haze-fog and the awareness of haze-fog hazards, guide the people to establish a healthy protection awareness and environmental friendly attitude, promote public understanding of the causes of haze-fog, and actively participate in the collaborative management of haze-fog.

Key words: environmental attitude, cognition of haze-fog, protective behavior, KAP theoretical model