The invention discloses a resistor, a radiator and combined equipment of the resistor and the radiator, and belongs to the field of power electronics. The resistor is columnar in appearance and comprises a metal end, an insulation part, a shell, a metal bar, a resistance wire, thermally conductive insulating filler and a metal connecting mechanism, wherein the metal connecting mechanism of the resistor is connected with the radiator in a direct contact manner. By virtue of adoption of the structure and the connection manner, the length of the resistor can be reduced, and complete leakage isolation of an electrical loop of the resistor and a water inlet and outlet pipe of the radiator can be realized, so that the combined equipment of the resistor and the radiator is compacter in structure and tidier in connection.