Control cabinet heat dissipation device

The utility model provides a heat dissipation device of a control cabinet, and relates to the technical field of control cabinets. The control cabinet heat dissipation device comprises a control cabinet, an electrical element is arranged in the control cabinet, a heat exchange pipe is fixedly installed on the inner wall of the side, provided with the electrical element, of the control cabinet, the heat exchange pipe is arranged in a roundabout mode in the width direction of the control cabinet, and the water inlet end and the water outlet end of the heat exchange pipe are communicated with external refrigeration equipment. Heat exchange is performed inside the control cabinet by using the heat exchange pipe and external refrigeration equipment, condensate water formed on the pipe wall of the heat exchange pipe is drained and discharged by using a part at the bottom end of the heat exchange pipe, and residual water possibly formed at the bottom of the control cabinet is discharged by using the structure at the