The invention relates to a multifunctional coal mining machine. A conveying component is fixed to the upper surface of a traveling mechanism; the rear end of a telescopic boom is hinged to the middleof the left wall of a guide channel; a base C is fixed to the middle of the left wall of the traveling mechanism, the lower end of a cylinder A is hinged to the base C, the cylinder A is hinged to therear of the outer wall of the telescopic boom, a crushing drum is fixed to the front end of the telescopic boom, a support plate is fixedly connected to the upper end of the front side of the inner wall of the guide channel, and a digging component is fixedly connected to the upper portion of the support plate. The multifunctional coal mining machine has the advantages that the multifunctional coal mining machine can move flexible, two coal mining modes are provided, the multifunctional coal mining machine is available for continued coal mining when not moving forward, bulky gangue in a coalseam can be cleared quickly, the collected coal can be transferred quickly, and dust can be removed continuously and effectively.