A laundry treatment apparatus comprising: a water discharge container ; a condensed water collector disposed in a cabinet , wherein the condensed water collector has a collection space for storing therein condensed water; a discharge pump assembly installed in the condensed water collector to pump the condensed water stored in the condensed water collector toward the water discharge container ; a sterilization module configured to sterilize the condensed water in the condensed water collector ; a heat pump system for heating air and condensing moisture from air used to dry laundry; a circulation fan assembly for circulating air; and a controller configured to control the heat pump system, the circulation fan assembly , the discharge pump assembly and the sterilization module , wherein the condensed water collector is configured for storing therein condensed water flowing down from the heat pump system, wherein the sterilization module is configured for irradiating short-wavelength ultraviolet-rays to the condensed water; characterized in that the controller is configured to: activate the heat pump system and the circulation fan assembly to dry the laundry, and deactivate the heat pump system and the circulation fan assembly ; activate the discharge pump assembly and the sterilization module to irradiate the short-wavelength ultraviolet-rays to the condensed water circulated under an operation of the discharge pump assembly . a water discharge container ; a condensed water collector disposed in a cabinet , wherein the condensed water collector has a collection space for storing therein condensed water; a discharge pump assembly installed in the condensed water collector to pump the condensed water stored in the condensed water collector toward the water discharge container ; a sterilization module configured to sterilize the condensed water in the condensed water collector ; a heat pump system for heating air and condensing moisture from air used to dry laundry; a circulation fan assembly for circulating air; and a controller configured to control the heat pump system, the circulation fan assembly , the discharge pump assembly and the sterilization module , wherein the condensed water collector is configured for storing therein condensed water flowing down from the heat pump system, wherein the sterilization module is configured for irradiating short-wavelength ultraviolet-rays to the condensed water; characterized in that the controller is configured to: activate the heat pump system and the circulation fan assembly to dry the laundry, and deactivate the heat pump system and the circulation fan assembly ; activate the discharge pump assembly and the sterilization module to irradiate the short-wavelength ultraviolet-rays to the condensed water circulated under an operation of the discharge pump assembly . activate the heat pump system and the circulation fan assembly to dry the laundry, and deactivate the heat pump system and the circulation fan assembly ; activate the discharge pump assembly and the sterilization module to irradiate the short-wavelength ultraviolet-rays to the condensed water circulated under an operation of the discharge pump assembly . <EOS>