Abstract: Coal is the main energy source in our country and the basic industry of economic development in China. In the process of coal mining, in order to ensure the safety of coal mining and the quality of coal resources development, it is necessary to study a series of technologies such as coal mine excavation roadway technology and roadway roof management, the roof accident in the process of coal mining accounted for a large proportion, and even in the process of mining caused a roof accident. Therefore, only in the process of coal mining to strengthen the control and management of the roof, it can ensure the safe excavation. Based on the case of the management of the roof, this paper analyzes the application of the control technology of the tunnel under thin bedrock.