Result: The result showed that the prevalence rate of noise induced deafness was27.97%, there was a dose response relation between the incidence of noise induced deafness and the doses of the noise exposure.

• 结果:结果表明；所调查五金工业噪声作业工人噪声性耳聋患病率为27.；97%25各级噪声性耳聋患病率与噪声接触剂量之间存在着剂量反应关系。