In order to solve the problem of broken roof and poor stability caused by the influence of super mining influence in the 306 comprehensive mining face and the down-slot of Daning Mine, the prevention of roof caving control technology combining cement slurry over-slurry coal reinforcement in the down-slot and local roof chemical slurry reinforcement in the geological anomaly area of the comprehensive mining face was given. The results showed that the technical solution effectively increased the rock strength of the roof sides of the comprehensive mining face and the down-slot, thus enhanced the stability of the surrounding rock, and the deformation was within the controllable range through the observation of the top sides shift, and the phenomenon of flaking and roofing did not occur on the face and the down-slot, which realized the safe and efficient recovery of the comprehensive mining face.