Taking an example of steel industry, impacts of the overproduction in Chinas steel industry on its trading countries are attempted to explain in this writing. Actually recently the US, Canada, EU, Australia and ASEAN countries have been investigating China’s steel dumping, and the US already settled on a preliminary anti-dumping judgment in March. Korea, also, requested China to cut back on its exports, and some Korean companies filed an anti-dumping sue. Finally some projections on future developement are followed in this writing: overproduction problem will not be easily corrected in near future. Secondly, in some industries other than manufacturing sectors, Chinese companies will try to seek the overseas markets to solve their overproduction problems as well.