Abstract: In order to analyze the relationships between the factors influencing the construction enterprise workers safety knowledge sharing,literature review and expert consultations were carried out to identify 6 indicators including 34 factors, and to build a conceptual assumption model for factors influencing building enterprise workers'safety knowledge sharing behavior.A questionnaire survey was conducted to quantify the factors. A verification analysis of factors was made by using AMOS and SPSS for the model. The results show that the organization atmosphere, interest stimulation, safety training and project discussion have a great influence on workers safety knowledge sharing, and the first one has the greatest influence, and that for the sake of preventing the construction safety accidents, the construction enterprises should pay full attention to improving the atmosphere of the enterprise, strengthening the internal management, improving the communication between the employees and communication, and inereasing the frequency of the workers'safety knowledge sharing behavior.

Key words: construction safety, structural equation modeling(SEM), knowledge sharing behavior, impact factor, organizational atmosphere