Abstract: In order to explore status quo of unsafe psychology and behavior of workers in confined space and study relationship between them, a developed scale for unsafe psychology and behavior was used to investigate 206 frontline operators. Then, SPSS software was utilized to analyze variance of unsafe psychological scores of each demographic variable in collected questionnaire, and correlation analysis and regression analysis were performed on unsafe psychological scores and behavior scores of various dimensions. The results show that in addition to gender and age, level of unsafe psychology varies significantly in terms of service length, marital status, education level and unit attributes, and all dimensions of unsafe psychology have a strong positive correlation with unsafe behavior. Of seven kinds of unsafe psychology studied, four of them, including herd mentality, fluke, shortcut energy saving and boredom, have a significant impact on unsafe behavior of workers in confined space. Among them, herd mentality has the greatest influence, followed by fluke, shortcut energy saving and boredom in turn.

Key words: confined space, operator, unsafe psychology, unsafe behavior, fluke