Method for preventing and controlling rock burst through underground and underground hydraulic fracturing of coal mine

The invention discloses a method for preventing and controlling rock burst through underground and underground hydraulic fracturing of a coal mine. The method comprises the following steps that a coal face overlying strata key layer, a ground horizontal well fracturing layer and an underground top plate hydraulic fracturing layer position are determined; an L-shaped horizontal well is constructed on the ground, and staged fracturing is conducted on a ground horizontal well fracturing layer; the method comprises the following steps: carrying out hydraulic fracturing on an underground top plate hydraulic fracturing layer by an advanced coal mining working face before stoping of the coal mining working face, so that all rock stratums below an overlying strata key layer of the coal mining working face regularly collapse; according to the method for preventing and controlling rock burst through hydraulic fracturing above and below the coal mine, the L-shaped horizontal well is constructed on the ground to conduct