The invention relates to a full-automatic heavy electronic door lock which comprises a shell, an electric control board, a driving controller, an unlocking shifting fork assembly, a latch bolt, a main spring bolt assembly and an auxiliary spring bolt assembly are arranged in the shell, and the driving controller is electrically connected with the electric control board and drives the main spring bolt assembly and the auxiliary spring bolt assembly to move through the unlocking shifting fork assembly. The unlocking shifting fork assembly comprises a shifting wheel, a driving gear, a linkage gear and a front latch bolt shifting fork, the driving gear, the linkage gear and the front latch bolt shifting fork are rotationally arranged on the shifting wheel, the driving gear is in transmission connection with the output end of the driving controller, the linkage gear and the front latch bolt shifting fork, and the front latch bolt shifting fork is in transmission connection with the latch bolt. The linkage gear is provided with a first tooth surface and a second tooth surface, the first tooth surface and the second tooth surface are in transmission connection with the auxiliary spring bolt assembly and the main spring bolt assembly respectively, according to the structure, the auxiliary spring bolt assembly and the main spring bolt assembly can be driven through the first tooth surface and the second tooth surface at different angles, the door lock structure is simplified, and operation is easy and convenient.