Abstract: Aiming at the technical issues that spontaneous combustion easily happened in the goaf of large dip angle fully mechanized caving face, and conventional grouting was difficult to effectively cover coal body in the goaf, it studied and explored the embedded high casing grouting technology in the goaf. Its technical principle is embedding high grouting casing before mining in the working face, with the advance of the working face, grouting was implemented in the goaf through embedding casing.