The utility model discloses a kind of AGV dolly telescopic loading structures, including frame, the lateral surface of the frame is equipped with second sliding slot;Expansion board, the expansion board and second sliding slot are slidably connected;Adjusting support component, the adjusting support component includes vertical plate installed in the bottom of frame, first electric cylinder is set to the lateral surface of vertical plate, and the output end of first electric cylinder is connected with moving box;The beneficial effects of the utility model are that: when needing to expand loading area, expansion board can be extracted by the adjusting support component designed, meet the loading demand of different size goods, improve the applicability of AGV dolly loading structure;When expansion board is not needed to be used, it can be retracted, save space;After expansion board is extracted, second electric cylinder drives push plate to move upwards and rest on the bottom surface of expansion board, increase the support to expansion board, effectively improve the strength of expansion board, and then improve goods support performance, prolong the service life of expansion board.