Abstract: An improved laundry drier which includes an outer case as well as an inner case and a tub which is rotationally driven. There is provided a heating housing having heating elements contained therein. A blower is located beneath the heating elements in the heating housing. A first electromagnetic valve is located in a passage of a suction duct. A branch duct is formed into the passage and is in fluid communication with a suction end of the blower. A second electromagnetic valve is formed in the branch duct to control fluid communication between the passage of the suction duct and a spraying duct. There is provided a vacuum apparatus disposed therein. Hot air may be circulated through the spraying duct and finally through the blower and the heating elements in the heating housing during a drying process.