The invention relates to an automatic strip steel deviation correction control method for a hot continuous rolling finishing mill group. The automatic strip steel deviation correction control method includes the following steps that 1, a strip steel deviation detecting device is arranged between two adjacent racks of the hot continuous rolling finishing mill group; 2, the strip steel deviation value delta w at the strip steel deviation detection device is obtained; 3, the to-be-adjusted roll gap deviation value delta G of the downstream rack is calculated according to the strip steel deviationvalue delta w; 4, the time T of the strip steel from the detection device to the downstream rack is calculated; 5, a rack roll gap control system delays time T, and the roll gap of the downstream rack is adjusted according to the roll gap deviation value delta G; 6, the strip steel deviation value delta w at the strip steel deviation detection device is detected by the strip steel deviation detection device, and the step 3 is repeatedly executed until downstream rack steel cast is conducted; and after the downstream rack steel cast is conducted, the roll gap deviation delta G of the downstream rack is cleared. The roll gap deviation of the downstream rack is continuously adjusted according to the strip steel deviation position, and thus the deviation correction of the strip steel during entire rolling is realized.