A washing machine, comprising: a cabinet; a tub disposed inside of the cabinet to accommodate water at an inside therein, and a detergent feeding apparatus to supply at least one detergent, wherein the detergent feeding apparatus comprises: a detergent container housing installed at an inside of the cabinet and a detergent container detachably mounted at the detergent container housing while accommodating detergent, characterized in that the detergent feeding apparatus supplies at least one detergent along with wash water to the tub; at least one valve apparatus is configured to allow the detergent accommodated at the detergent container to be automatically put into the detergent container housing, and wherein the at least one valve apparatus comprises: a detergent accommodating room to accommodate detergent at an inside therein; an inlet hole introducing wash water to the detergent accommodating room; an outlet hole discharging wash water from the detergent accommodating room; an inlet valve (101, 131) opening and closing the inlet hole, and an outlet valve (102, 141) opening and closing the outlet hole; and a valve driving unit provided to selectively open and close the inlet valve (101, 131) and the outlet valve (102, 141). a cabinet; a tub disposed inside of the cabinet to accommodate water at an inside therein, and a detergent feeding apparatus to supply at least one detergent, wherein the detergent feeding apparatus comprises: a detergent container housing installed at an inside of the cabinet and a detergent container detachably mounted at the detergent container housing while accommodating detergent, characterized in that the detergent feeding apparatus supplies at least one detergent along with wash water to the tub; at least one valve apparatus is configured to allow the detergent accommodated at the detergent container to be automatically put into the detergent container housing, and wherein the at least one valve apparatus comprises: a detergent accommodating room to accommodate detergent at an inside therein; an inlet hole introducing wash water to the detergent accommodating room; an outlet hole discharging wash water from the detergent accommodating room; an inlet valve (101, 131) opening and closing the inlet hole, and an outlet valve (102, 141) opening and closing the outlet hole; and a detergent container housing installed at an inside of the cabinet and a detergent container detachably mounted at the detergent container housing while accommodating detergent, characterized in that the detergent feeding apparatus supplies at least one detergent along with wash water to the tub; at least one valve apparatus is configured to allow the detergent accommodated at the detergent container to be automatically put into the detergent container housing, and wherein the at least one valve apparatus comprises: a detergent accommodating room to accommodate detergent at an inside therein; an inlet hole introducing wash water to the detergent accommodating room; an outlet hole discharging wash water from the detergent accommodating room; an inlet valve (101, 131) opening and closing the inlet hole, and an outlet valve (102, 141) opening and closing the outlet hole; and a detergent accommodating room to accommodate detergent at an inside therein; an inlet hole introducing wash water to the detergent accommodating room; an outlet hole discharging wash water from the detergent accommodating room; an inlet valve (101, 131) opening and closing the inlet hole, and an outlet valve (102, 141) opening and closing the outlet hole; and a valve driving unit provided to selectively open and close the inlet valve (101, 131) and the outlet valve (102, 141).