Review and reflection of the development of mining cities of Three Provinces in Northeast China

Since the founding of our People's Republic, mining cities of three provinces in northeast china have provided mineral resources and raw materials to all over the country, which has contributed greatly to the economic development of the country. Accompanying mineral resources run out, these cities have run into trouble in economy, society and environment. This paper reviewed the development process of mining cities of three provinces in northeast china, analyzed the difficult situation of development and put forward optimization strategy of sustainable development, which include the following:accelerate industrial structure adjustment; build integrated social security system; strengthen the repair and protection of environment.