Abstract: Due to safety helmets accident is piecemeal small accident, it is not easy for people to focus on. Coal mine enterprises lack vigilance about it, so accidents often occur because of the quality problems and misuse. Therefore it is necessary to analyze the causes of safety helmets accidents systematically and propose prevention measures. Based on behavior safety model, through the analysis of 35 safety helmets accidents, it obtains the direct causes and the deep causes about the accidents. The analysis results show that the wrong organizational behaviors are the root cause of the accidents, for instance, the lack understanding about safety creates economic benefits, the lack awareness of safety investment and leadership role on safety training, the imperfection of management system and problems during execution. The prevention measures are proposed according to the results including strengthening the safety culture construction, completing and effectively implementing the safety management system, correcting the unsafe habits of employees by training and other methods.