Abstract: This article takes 1307 working face of Guojiahe Coal Mine as an example, summarizes the laws of roof water inrush from the working face, focuses on the analysis of the source of water damage of mine roof. Comprehensive detection method combining geophysical exploration and drilling, for different water damage types, the method of preventing and controlling water by using the up and down drillings and drainage of the relative well is adopted to eliminate the hidden danger of water damage during the mining face and guarantee the safe production of the working face.