Abstract: In order to ensure the safety and well-organized mining of 9308 working face during the first weighting, the key strata causing the rock burst of working face was analyzed. Using the technology of breaking roof by blasting in cutting hole to prevent rock burst was proposed. And through the theoretical analysis, numerical simulation and field monitoring, the results showed that the basic roof sandstone was the inferior key strata causing the danger of rock burst of working face. Breaking roof by blasting in the cutting hole for hard roof can reduce the interval of first weighting of roof effectively. The degree of stress concentration in front of the working face was decreased and transferred to the deep coal, so that the risk of rock burst was reduced and the safety mining of working face during the first weighting was realized.