The invention discloses an externally-hung condenser for a refrigerator, and belongs to the field of externally-hung condensers. The externally-hung condenser for the refrigerator comprises a condenser body, adjusting rods, a mounting frame, a sweeping assembly, a driving mechanism and dust collection mechanisms. The adjusting rods are arranged on the two sides of the condenser body respectively, therefore, detachable connection between the condenser and the refrigerator is achieved, and later maintenance and replacement are facilitated; the sweeping assembly is mounted on the mounting frame to sweep the surface of the condenser body, and therefore the situation that excessive dust adheres to the surface of the condenser body, and normal operation of the condenser body is affected is avoided; the driving mechanism is mounted on the mounting frame to drive the sweeping assembly to move, therefore, sweeping of the whole surface of the condenser body is achieved, and sweeping is more thorough; and the dust collection mechanisms are arranged on the two sides of the sweeping assembly correspondingly, so that the situation that dust swept out by the sweeping assembly splashes, and secondary pollution is caused is avoided.