A strip shape maintenance assembly for preventing a rolling mill from slipping in the operating process includes a machine body (1), a quick-cooling drying module (2), a stressed buffering module (3),a locating sensor module (4) and a managing module (5) are arranged at the machine body (1), during running, the quick-cooling drying module (2) is arranged at a billet outlet, the stressed bufferingmodule (3) is arranged at a roll, the locating sensor module (4) is arranged at a biting position of the billet, and the managing module (5) manages summarized information; the quick-cooling drying module (2) is provided with a portion-sealing module (6) which is used for blocking the billet to contact with rolling cooling water during cooling the billet out of a furnace; an information sensing module (7) is arranged at the locating sensor module (4) and is used for transmitting whether the steel ingot biting position is a predetermined position; a reminder module (8) is arranged at the managing module (5); and the billet is cooled and the stressed condition of the roll is buffered, thereby avoiding the slipping phenomenon and enabling the operation to be smoothly.