The present invention relates to an laundry treating apparatus comprising: a tub providing a space for storing water; a drum rotatably provided inside the tub and providing a space for storing clothes; a detergent box provided outside of the tub and providing a space for storing detergent, and receiving water from only the tub; tub penetrating holes provided while penetrating the inner peripheral surface of the tub; and a connecting part of which one side communicates with the tub penetrating holes and the other side communicates with the detergent box so as to allow at least a portion of the water moving in a direction of the inner peripheral surface of the tub by a centrifugal force generated during rotation of the drum, to flow into the detergent box, and mix the same with the detergent and discharge the same back to the inner peripheral surface of the tub.