解放以来,对我国尘肺曾进行过三次规模较大的全国性矽肺普查。通过普查,基本上摸清了矽肺和煤尘肺的发病情况。并在控制矽尘浓度,改善劳动条件和降低矽肺发病率等方面都采取了一定的措施。目前,大部分有色金属矿山的粉尘浓度合格率达60～80％左右;对发病较高的有色金属矿山、煤矿及耐火材料、石粉、玻璃、陶瓷、铸造等重点行 Since liberation, we conducted three large-scale national silicosis surveys on pneumoconiosis in our country. Through the census, basically find out the incidence of silicosis and coal pneumoconiosis. And take some measures in controlling the concentration of silica dust, improving working conditions and reducing the incidence of silicosis. At present, most non-ferrous metal mine dust concentration pass rate of 60 to 80%; higher incidence of non-ferrous metal mining, coal and refractory materials, stone powder, glass, ceramics, casting and other key lines