A fabric treatment apparatus comprising: a fabric receiving unit having a fabric receiving space formed therein; a nozzle disposed in the fabric receiving unit; a steam generation heater for converting electric energy into thermal energy; a flow channel forming unit for generating steam using the thermal energy received from the steam generation heater and forming a directional flow channel between an introduction port, through which water is introduced, and a discharge port, through which steam is discharged; a water supply valve configured to adjust a ratio of an open time to a close time of the water supply valve for adjusting a flow rate of water to be supplied to the flow channel forming unit; a temperature sensing unit for measuring the temperature of the flow channel forming unit; and a controller adapted to receive information of the temperature of the flow channel forming unit from the temperature sensing unit, and to control the water supply valve in a first pattern having a first ratio of an open time to a close time of the water supply per time when the temperature of the flow channel forming unit is less than a first predetermined temperature Tc, and to control the water supply valve in a second pattern having a second ratio of an open time to a close time of the water supply per time, in which a supply amount of water per time is greater than in the first pattern, when the temperature of the flow channel forming unit is equal to or greater than the first predetermined temperature Tc, wherein the steam generation heater is adapted to be stopped when the temperature of the flow channel forming unit is not decreased even after the water supply valve is opened in the second pattern. a fabric receiving unit having a fabric receiving space formed therein; a nozzle disposed in the fabric receiving unit; a steam generation heater for converting electric energy into thermal energy; a flow channel forming unit for generating steam using the thermal energy received from the steam generation heater and forming a directional flow channel between an introduction port, through which water is introduced, and a discharge port, through which steam is discharged; a water supply valve configured to adjust a ratio of an open time to a close time of the water supply valve for adjusting a flow rate of water to be supplied to the flow channel forming unit; a temperature sensing unit for measuring the temperature of the flow channel forming unit; and a controller adapted to receive information of the temperature of the flow channel forming unit from the temperature sensing unit, and to control the water supply valve in a first pattern having a first ratio of an open time to a close time of the water supply per time when the temperature of the flow channel forming unit is less than a first predetermined temperature Tc, and to control the water supply valve in a second pattern having a second ratio of an open time to a close time of the water supply per time, in which a supply amount of water per time is greater than in the first pattern, when the temperature of the flow channel forming unit is equal to or greater than the first predetermined temperature Tc, wherein the steam generation heater is adapted to be stopped when the temperature of the flow channel forming unit is not decreased even after the water supply valve is opened in the second pattern.