The government policies, management features and achievements ot non-coal industry in dillerent stages are introduced in this paper.

Analysis of the roof-fall and collapse accident in non-coal mine;

Research and development of statistical management system for casualty accident in non-coal mines;

Discussion on reasons of personal casualty in non-coal mine and the countermeasures;

Stabilities in underground mined-out areas of non-coal mines in China;

The number of non-coal mines in China amounts to more than 110,000,employees more than 1,000,000,the people suffer from occupational diseases around 800,000,and the number is increasing more than 30,000 each year.

When the coal price is good and the enterprise fund is abundant,coal business enterprise should exert oneself to develop the non-coal industry,preparing early for the future resource.

Development strategy research of non-coal industry of coal large group enterprise is an important part of enterprise development.

The problem and difficulties in non-coal industry development of state-owned coal enterprise firstly are analysed,and then proposes the strategy and the direction of the development based on our country actual circumstance of the coal enterprise.