A washing machine, comprising: a cabinet having an inlet port formed at a front panel for laundry insertion thereinto and a door to open or close the inlet port; a tub within the cabinet for storing wash water; a drum in communication with the inlet port, and rotatably provided within the tub; and a detergent dispenser (200,200') provided below the inlet, wherein the detergent dispenser (200,200') comprises: a dispenser case having an opening portion on an upper surface thereof; and an automatic detergent supply unit and a manual detergent supply unit mounted at the dispenser case, and wherein the automatic detergent supply unit comprises: at least one container (250a, 250b) provided with an inlet port and an outlet port for storing liquid detergent; a container receiving portion to receive the container (250a,250b); and a pumping device to selectively discharge liquid detergent discharged from the outlet port of the container (250a,250b) by a predetermined amount; characterized in that: the automatic detergent supply unit further comprises: a passage forming plate coupled to a bottom surface of the container (250a,250b) to cover the outlet port, wherein the passage forming plate comprises: an inlet port facing the outlet port for flowing the liquid detergent thereinto, a discharge portion to discharge the liquid detergent by the pumping device, a supply passage connecting the inlet port and the discharge portion in order to transfer the liquid detergent flowed into the inlet port to the discharge portion, and a receiving space formed on the supply passage to receive the pumping device; and in that the pumping device is provided with a gear pump (284, 285) configured to transmit liquid detergent flowed into the inlet port to the discharge portion. a cabinet having an inlet port formed at a front panel for laundry insertion thereinto and a door to open or close the inlet port; a tub within the cabinet for storing wash water; a drum in communication with the inlet port, and rotatably provided within the tub; and a detergent dispenser (200,200') provided below the inlet, wherein the detergent dispenser (200,200') comprises: a dispenser case having an opening portion on an upper surface thereof; and an automatic detergent supply unit and a manual detergent supply unit mounted at the dispenser case, and a dispenser case having an opening portion on an upper surface thereof; and an automatic detergent supply unit and a manual detergent supply unit mounted at the dispenser case, and wherein the automatic detergent supply unit comprises: at least one container (250a, 250b) provided with an inlet port and an outlet port for storing liquid detergent; a container receiving portion to receive the container (250a,250b); and a pumping device to selectively discharge liquid detergent discharged from the outlet port of the container (250a,250b) by a predetermined amount; at least one container (250a, 250b) provided with an inlet port and an outlet port for storing liquid detergent; a container receiving portion to receive the container (250a,250b); and a pumping device to selectively discharge liquid detergent discharged from the outlet port of the container (250a,250b) by a predetermined amount; characterized in that: the automatic detergent supply unit further comprises: a passage forming plate coupled to a bottom surface of the container (250a,250b) to cover the outlet port, wherein the passage forming plate comprises: an inlet port facing the outlet port for flowing the liquid detergent thereinto, a discharge portion to discharge the liquid detergent by the pumping device, a supply passage connecting the inlet port and the discharge portion in order to transfer the liquid detergent flowed into the inlet port to the discharge portion, and a receiving space formed on the supply passage to receive the pumping device; and in that the pumping device is provided with a gear pump (284, 285) configured to transmit liquid detergent flowed into the inlet port to the discharge portion. a passage forming plate coupled to a bottom surface of the container (250a,250b) to cover the outlet port, wherein the passage forming plate comprises: an inlet port facing the outlet port for flowing the liquid detergent thereinto, a discharge portion to discharge the liquid detergent by the pumping device, a supply passage connecting the inlet port and the discharge portion in order to transfer the liquid detergent flowed into the inlet port to the discharge portion, and a receiving space formed on the supply passage to receive the pumping device; an inlet port facing the outlet port for flowing the liquid detergent thereinto, a discharge portion to discharge the liquid detergent by the pumping device, a supply passage connecting the inlet port and the discharge portion in order to transfer the liquid detergent flowed into the inlet port to the discharge portion, and a receiving space formed on the supply passage to receive the pumping device; and in that the pumping device is provided with a gear pump (284, 285) configured to transmit liquid detergent flowed into the inlet port to the discharge portion.