The invention proposes a multifunctional poking mechanical arm device of a loading machine. The device comprises a mounting plate, a poking arm module, an oil cylinder module, a steering module and a balance module; one end of a first poking arm of the poking arm module is hinged with one end of a second poking arm; the other end of the second poking arm is hinged with the mounting plate; the other end of the first poking arm is hinged with the steering module; a chute is formed in a steering base; a steering slide block is mounted in the chute; the first poking arm is hinged with the steering slide block; a first oil cylinder of the oil cylinder module is hinged with the steering slide block and the first poking arm; a second oil cylinder is hinged with the first poking arm and the second poking arm; a third oil cylinder is hinged with the second poking arm and the mounting plate; a rotating oil cylinder is respectively hinged with the steering slide block and the steering base; and one side of a hinge rod of the balance module is hinged with the steering base, and the other side is hinged with a frame. The mounting plate is fixed on the poking arm module, and extends to the front side of a shovel bucket of the loading machine, so that the loading machine is convenient to poke materials, difficult to shovel at ordinary times, into the shovel bucket.