[目的 ]了解职业危害作业场所行车的污染水平。[方法 ]对行车内、行车下测定点的职业性有害因素进行测定、比较和分析。 [结果 ]6个行业中有 4个行业行车内下的有害因素无明显差别 (P>0 .0 5 ) ,除钢铁行业外 ,其它行业测定点有害因素综合指数超标率无显著差别 (P>0 .0 5 )。[结论 ]职业危害作业场所行车的作业环境可受影响 ,影响水平与行车下的作业点大致相同。 [Objective] To understand the pollution level of occupational hazard operation site. [Method] The occupational harmful factors in the driving points and driving points were measured, compared and analyzed. [Result] There were no significant differences in the harmful factors in the four industries among the six industries (P> 0.05). Except steel industry, there was no significant difference in the excess index of the comprehensive index of harmful factors in other industries (P> 0 .0 5). [Conclusion] Occupational hazards to the working environment of driving a job site may be affected, and the impact level is substantially the same as that of driving a car.