Abstract: The principle of the loose blasting method , the theoretical calculation and the situation of the engineering calculation are analyzed in detail.The application of the coal of the prevention and control of the loose blasting mining face and gas outburst technology in the experiment research on the Changping ore are introduced.The experimental data show that,the loose blasting method is good to prevent and control gas outburst and speed up the working face advance.

Key words: Loosing blasting method, Radius of influence, Gas outburst, Application effects