A washing machine, comprising: a casing having a laundry introduction hole formed in a front surface of the casing therein; a tub disposed in the casing and having an entrance opening formed in a front surface of the tub to communicate with the introduction hole; a drum rotatably disposed in the tub and having an entrance opening through which laundry is introduced; a pump configured to pump water discharged from the tub; an annular gasket allowing the introduction hole and the entrance opening of the tub to communicate with each other, and having a plurality of circulation nozzles configured to spray water into the drum; and a conduit fixed to the annular gasket, and configured to guide the water pumped by the pump to the plurality of circulation nozzles, wherein the conduit comprises a transport pipe configured to guide water introduced through an inlet port and pumped by the pump, and the conduit further comprises a plurality of nozzle water supply ports (72a, 72b, 72c, 72d) configured to distribute the water guided along the transport pipe to the plurality of circulation nozzles, characterized in that a plurality of communication holes respectively communicating with the plurality of nozzle water supply ports (72a, 72b, 72c, 72d) is formed on an inner diameter part of the transport pipe, and a port connection groove with an entrance portion of each of the plurality of nozzle water supply ports (72a, 72b, 72c, 72d) to be inserted thereinto is formed on a circumference of each of the plurality of communication holes, and the entrance portion of each of the plurality of nozzle water supply ports (72a, 72b, 72c, 72d) is bonded to the inner diameter part within the port connection groove. a casing having a laundry introduction hole formed in a front surface of the casing therein; a tub disposed in the casing and having an entrance opening formed in a front surface of the tub to communicate with the introduction hole; a drum rotatably disposed in the tub and having an entrance opening through which laundry is introduced; a pump configured to pump water discharged from the tub; an annular gasket allowing the introduction hole and the entrance opening of the tub to communicate with each other, and having a plurality of circulation nozzles configured to spray water into the drum; and a conduit fixed to the annular gasket, and configured to guide the water pumped by the pump to the plurality of circulation nozzles, wherein the conduit comprises a transport pipe configured to guide water introduced through an inlet port and pumped by the pump, and the conduit further comprises a plurality of nozzle water supply ports (72a, 72b, 72c, 72d) configured to distribute the water guided along the transport pipe to the plurality of circulation nozzles, characterized in that a plurality of communication holes respectively communicating with the plurality of nozzle water supply ports (72a, 72b, 72c, 72d) is formed on an inner diameter part of the transport pipe, and a port connection groove with an entrance portion of each of the plurality of nozzle water supply ports (72a, 72b, 72c, 72d) to be inserted thereinto is formed on a circumference of each of the plurality of communication holes, and the entrance portion of each of the plurality of nozzle water supply ports (72a, 72b, 72c, 72d) is bonded to the inner diameter part within the port connection groove.