A laundry dryer includes: a cabinet defining an outer body of the laundry dryer, a drum that is rotatably disposed inside the cabinet and that is configured to receive hot air and steam, a steam unit that is disposed inside the cabinet and that is configured to generate the steam, a storage tank that is configured to detachably couple to an inside of the cabinet and that defines a storage space for receiving water to be supplied to the steam unit, and a tank housing that is disposed inside the cabinet and that is configured to accommodate the storage tank. An intake hole is defined at a front upper surface of the storage tank and provides, based on the storage tank being accommodated in the tank housing, an air flow path between the storage space and an external space of the storage tank.