Disclosed are a tag for managing laundry and a method of classifying and transferring laundry using the same. The tag for managing laundry includes a tag portion, a box number portion, a laundry number portion, and a barcode part. The tag portion includes another tag portion and is attached to each piece of laundry classified by customer. The box number portion for distinguishing between the laundry shops is formed by printing a unique number on one surface of each of the tag portions. The laundry number portion for checking the number of pieces of laundry left by customers is formed by printing the number of pieces of laundry left by the customers on one surface of the tag portion. The barcode part for facilitating transfer of laundered laundry from the laundry plant to the laundry shops is formed by printing a barcode including information of the box number portion and the laundry number portion on one surface of the tag portion.The method of classifying and transferring laundry includes a step of collecting at least one piece of laundry left by customers at the laundry shops; a step of respectively attaching the tag portion to laundry left by the customers; a step of transferring the tag portion-attached laundry to a laundry plant; a step of scanning the barcode part of the tag portion respectively attached to the laundry by means of a barcode scanner when washing of the laundry transferred to the laundry plant is completed; and a step of classifying the laundry by laundry shop according to scanned information and transferring the classified laundry to the laundry shops.