The invention discloses a coal mine heading face high-pressure hydraulic perforating machine, and relates to rock drilling machines. The problem that an existing high pressure hydraulic perforating machine is large in size and not convenient to move is solved. A high pressure water pump, a hydraulic pump station, a clamping-pushing mechanism and a hydraulic control valve body assembly are installed on a machine frame. Four supporting oil cylinders are installed in the front and back of the machine frame. The clamping-pushing mechanism is composed of a clamper, a clamper track and a pushing oil cylinder. A high pressure drill stem comprises a plurality of connected steel tubes, and the joints are sealed. The hydraulic control valve body assembly is composed of a main valve body, a walking supporting control valve set and a kerf motion valve set, the main control valve is a three-position four-way valve and comprises three operating positions, the walking supporting valve body is composed of a walking motor control valve body and a control valve body of a supporting leg oil cylinder, and the kerf motion valve set is composed of a clamper control valve body, a pushing oil cylinder control valve body and a clamper track oil cylinder control valve body. The coal mine heading face high-pressure hydraulic perforating machine is used for modifying the coal seam gas permeability and eliminating partial coal seam crustal stress, and has the advantages of being small in size and convenient to move.