The present invention relates to a laundry dryer. The laundry dryer has a drum rotatably provided to a cabinet, a hot air heater heating air to supply hot air to the drum, a steam generator selectively supplying steam to the drum, and a water supply source provided to one side of the cabinet. And, the water supply source has an accommodating part for storing water supplied to the steam generator and a water supply means for supplying the water within the accommodating part to the steam generator.