Disclosed a laundry treating apparatus comprising: a cabinet; a tub; a drum; and a detergent storage unit retractable or extendable into or from the cabinet through a front opening, wherein the detergent storage unit includes: a detergent storage frame retractable or extendable into or from the cabinet through the opening, wherein the detergent storage frame has detergent containing walls protruding upward from a bottom face thereof, wherein a detergent containing region is defined by the detergent containing walls; a detergent reservoir installed detachably on the detergent storage frame and surrounding at least a portion of the detergent containing region, wherein first detergent is stored in the detergent reservoir; and a detergent cup installed detachably in the detergent containing region, wherein the detergent storage frame has a detergent container formed in a portion of the detergent containing region except for the detergent cup, wherein second detergent is stored in the detergent container, wherein third detergent is stored in the detergent cup.