[目的]介绍一种用EASC-IHSTAT软件进行职业暴露监测数据处理和决策的方法。[方法]用EASC-IHSTAT软件对某厂某车间电焊工接触的电焊烟尘的时间加权浓度数据进行统计学分析,并推断出总体的数据分布类型和超过职业接触限值(occupational exposure limits,OEL)数据的百分比,然后参照美国职业安全与健康管理局5%的判定界值,做出该工作场所空气中电焊烟尘浓度对标准依从性的定性判定。[结果]该工作场所监测的电焊烟尘浓度均低于OELs,但按EASC-IHSTAT软件结果分析,该工作场所空气中电焊烟尘浓度超过OEL的比例达到10.6%。[结论]对工作场所职业病危害是否符合标准而言,EASC-IHSTAT方法对判定为“合格”的条件比我国大陆现行方法的要求更严格。 [Objective] To introduce a method of EASC-IHSTAT software for occupational exposure monitoring data processing and decision-making. [Methods] The time-weighted concentration data of the welding fumes coming from a workshop welder in a certain factory were statistically analyzed by EASC-IHSTAT software and the overall data distribution type and occupational exposure limits (OEL) were deduced. Data, and then refer to the 5% threshold of the Occupational Safety and Health Administration of the United States to make qualitative determinations of the standard compliance of the concentration of welding fumes in the workplace air. [Results] The concentrations of welding fumes and dust in the workplace were all lower than those of OELs. However, according to the results of EASC-IHSTAT software, the concentration of welding fumes and dust in the workplace exceeded OEL by 10.6%. [Conclusions] The EASC-IHSTAT method is more stringent than the current method in mainland China on the condition of “qualified” as to whether the workplace occupational hazards meet the standards.