A stack-type laundry treating apparatus includes upper and lower treating apparatuses and aligning legs. The upper treating apparatus includes an upper cabinet including an upper side panel and an upper base panel. The lower treating apparatus includes a lower cabinet including a lower side panel. A top of the lower cabinet is covered with the upper base panel. The aligning legs can be inserted into the upper base panel in a direction in which the upper treating apparatus is supported. The aligning legs can slide inwardly the upper base panel, and support the upper cabinet with respect to the lower cabinet.