A vacuum cleaner comprising: a main body configured to generate a difference in air pressure; and a suction nozzle configured to suck up dust from a floor by using the difference in air pressure, wherein the suction nozzle comprises: a connector forming a passage through which the dust moves into the main body; and a housing rotatably mounted in the connector and forming an inlet having a cylindrical shape, wherein the dust enters the passage through the inlet, wherein the connector comprises: an insertion portion having a cylindrical shape, the insertion portion being inserted into the inlet; characterised in that the connector comprises further a first connection portion spaced apart from the inlet in a direction of the passage; and a coupling part mounted in an outer surface of the insertion portion, the coupling part, together with the first connection portion, blocking movement of the housing in the direction of the passage, and wherein the inlet prevents relative deformation of the insertion portion and the coupling part. a main body configured to generate a difference in air pressure; and a suction nozzle configured to suck up dust from a floor by using the difference in air pressure, wherein the suction nozzle comprises: a connector forming a passage through which the dust moves into the main body; and a housing rotatably mounted in the connector and forming an inlet having a cylindrical shape, wherein the dust enters the passage through the inlet, wherein the connector comprises: an insertion portion having a cylindrical shape, the insertion portion being inserted into the inlet; characterised in that the connector comprises further a first connection portion spaced apart from the inlet in a direction of the passage; and a coupling part mounted in an outer surface of the insertion portion, the coupling part, together with the first connection portion, blocking movement of the housing in the direction of the passage, and wherein the inlet prevents relative deformation of the insertion portion and the coupling part. a connector forming a passage through which the dust moves into the main body; and a housing rotatably mounted in the connector and forming an inlet having a cylindrical shape, wherein the dust enters the passage through the inlet, wherein the connector comprises: an insertion portion having a cylindrical shape, the insertion portion being inserted into the inlet; characterised in that the connector comprises further a first connection portion spaced apart from the inlet in a direction of the passage; and a coupling part mounted in an outer surface of the insertion portion, the coupling part, together with the first connection portion, blocking movement of the housing in the direction of the passage, and wherein the inlet prevents relative deformation of the insertion portion and the coupling part. an insertion portion having a cylindrical shape, the insertion portion being inserted into the inlet; characterised in that the connector comprises further a first connection portion spaced apart from the inlet in a direction of the passage; and a coupling part mounted in an outer surface of the insertion portion, the coupling part, together with the first connection portion, blocking movement of the housing in the direction of the passage, and wherein the inlet prevents relative deformation of the insertion portion and the coupling part. a first connection portion spaced apart from the inlet in a direction of the passage; and a coupling part mounted in an outer surface of the insertion portion, the coupling part, together with the first connection portion, blocking movement of the housing in the direction of the passage, and wherein the inlet prevents relative deformation of the insertion portion and the coupling part.