The invention discloses a whole push device of an underground coal mine heavy scraper conveyor. The push device is connected with a hydraulic bracket, an end unloading scraper conveyor head frame, a machine head transition tank and a transfer loader tail. A novel push structure mainly consists of a transition push beam, a machine head push beam, a pin shaft, a connecting pin, a special connecting head and the like. The transition push beam and the machine head push beam are both designed as box structures to guarantee the strength of structural parts; the push device is connected with the transition push base by the connecting pin component; and the connecting pin can be directly replaced and used with a connecting pin of the scraper conveyor, so that the disassembly and the assembly are convenient. The whole shifting demands of the machine head part of the underground scraper conveyor and the transfer loader are satisfied; the unloading curve is basically kept invariable; and the integration of support, transfer and self-shifting of whole fully mechanized mining production system is realized.