[目的]了解外出打工对肺结核病发病率的影响。[方法]对单县1997～1999年3年外出打工人员2042人在三个春节期间进行了肺结核病调查,并与本地固定居住人口2084人对照观察。[结果]外出打工人员发病率为7.8‰。对照组发病率为2.9‰。[结论]外出打工人员的肺结核病的发病率明显高于城镇常住人口的发病率,差异显著(x~2=4.78,P<0.05)。 [Objective] To understand the impact of migrant workers on the incidence of pulmonary tuberculosis. [Method] A survey of tuberculosis among 2042 migrant workers in three years from 1997 to 1999 in three counties during a single Spring Festival was conducted and compared with 2084 permanent residents in a single county. [Results] The incidence of migrant workers was 7.8 ‰. The incidence of the control group was 2.9 ‰. [Conclusion] The incidence of pulmonary tuberculosis among migrant workers was significantly higher than that of urban resident population (x ~ 2 = 4.78, P <0.05).