Abstract: On the basis of energy mechanism of rock-burst,2 forms of rock-burst start were present. One is static load action under which rock-burst occurred when energy reached its limit slowly,the other is dynamic load action under which energy limit reached instantaneously. Specific prevention measures were put forward based on stress sources and load forms. That is,for static load condition,coal-body pressure relief should be adopted,but for dynamic load condition,reduction of dynamic load such as roof weakening should be applied.