对某钢铁企业的部分通风除尘系统进行了除尘效率和通风效果的测定，结果提示改善通风效果，降低管道阻力是提高整个除尘系统工作效率的关键。 The dust removal efficiency and ventilation effect of some ventilation and dust removal systems of a steel company were measured. The results showed that improving the ventilation effect and reducing the pipeline resistance were the keys to improve the efficiency of the whole dust removal system.