Device for cooling server cabinet

The utility model relates to the technical field of server cabinets, and discloses a device for cooling a server cabinet, which comprises a server cabinet and a cooling device, the server cabinet is provided with the cooling device, and the cooling device comprises a ventilation device and a water circulation cooling device. The ventilation device is installed on the back face of the server cabinet, a cabinet door is arranged on the back face of the server cabinet, and the ventilation device sucks circulating air through the ventilation opening; the water circulation cooling device is fixed at the bottom end of the server cabinet, the water circulation cooling device is provided with a water cooling pipeline, and the top of the water cooling pipeline is bent and inserted into the server cabinet. The internal part of the server cabinet is cooled through the refrigerator, and then is cooled through the axial flow fan and the fan on the cabinet door, so that the internal temperature of a server and the circulati