The present disclosure relates to the technical field of backlight code printing, and provides a backlight position correction device, which includes an assembly line and an alignment mechanism. The assembly line is configured to drive linear motion of the backlight; and the alignment mechanism is used to adjust a plurality of back-up backlights such that the backlights are in the same straight line. The alignment mechanism includes a fixing plate and a motion component. The fixing plate is disposed at a side of the assembly line. The motion component is disposed at a side of the assembly line opposite to the fixing plate, and configured to push a side of the backlight such that the backlight abuts against the fixing plate.