Deviation rectifying mechanism for label on labeling platform and deviation rectifying method for label

The deviation rectifying mechanism comprises a first supporting assembly and a second supporting assembly which are arranged below the labeling platform, the first supporting assembly comprises a plurality of first supporting plates arranged at intervals, a first guiding shaft is arranged in first guiding holes in all the first supporting plates in a penetrating mode, and a second guiding shaft is arranged in second guiding holes in all the first supporting plates in a penetrating mode; each first supporting plate can rotate around the corresponding first guide shaft; the second supporting assembly structurally comprises a plurality of second supporting plates arranged at intervals, and a second guide shaft is arranged in second guide holes in all the second supporting plates in a penetrating mode. A deviation rectifying adjusting plate is arranged on one side of each second supporting plate, and the deviation rectifying adjusting plates are connected with the second supporting plates through lifting connecti