Abstract: The phenomenon of coal wall spalling has become the main factor affecting the production of large mining height working face. The paper proposes a scheme of using inorganic grouting and reinforcement technology to control coal wall spalling with large mining height. Through laboratory experiments, a new kind of inorganic grouting material with characters of high injection rate, adjustable setting speed, high strength and high adhesion is developed; by means of theoretical analysis and field measurement, the parameters of grouting pressure, grouting radius are determined. By the effect of industrial test in field, it is known that the surrounding rock is dense, and the grouting material can cement well with broken surrounding rock. The bond strength between the paste and coal is improved, and the non-deformation ability of the surrounding rock is enhanced, and the depth of coal wall spalling is reduced to 0.4 to 0.5 m, which effectively controls coal wall spalling.