A laundry treating apparatus includes: a tub providing a space for storing water; a drum disposed in the tub in a rotatable manner to provide a space for storing clothing; a detergent box which is disposed outside the tub to provide a space for storing a detergent, and receives supply of water only from the tub; a tub through-hole passing through an inner circumferential surface of the tub; and a connection part having one side communicating with the tub through-hole and the other side communicating with the detergent box so that at least a portion of water moving in the direction of the inner circumferential surface of the tub due to a centrifugal force generated when the drum rotates is introduced into the detergent box, mixed with the detergent, and then discharged back to the inner circumferential surface of the tub again.