目的为企业采取有效的防护措施提供理论依据。方法应用多变量分析方法分析了尿铝的影响因素及使用过滤式口罩的防护效果。结果工人的年龄、国籍及吸烟行为对尿铝无影响；工人铝接触的累计时间、在焊接过程中使用的焊条长度及数量对尿铝有影响，与之呈正比关系；工人使用防护口罩效果并不明显。结论建议企业应采取局部通风方式或强化工人一直佩戴防护口罩的意识，工种轮换也不失为一种措施 Aims To provide a theoretical basis for enterprises to take effective protective measures. Methods Multivariate analysis was used to analyze the influencing factors of urinary aluminum and the protective effect of using filter mask. Results The age, nationality and smoking behavior of the workers had no effect on the urine aluminum. The cumulative exposure time of the workers, the length and number of welding electrodes used in the welding process had an effect on the urine aluminum, and the workers used protective masks Not obvious. Conclusions It is suggested that enterprises should adopt the mode of local ventilation or reinforce the awareness that workers always wear protective masks, and the type of work rotation is also a measure