The invention relates to an emergent cooling and refrigerating device for large internet servers. The emergent cooling and refrigerating device comprises a mobile platform, an air forced-ventilation device, a cooling plate, a supporting arm, an air guiding pipe and a control system, wherein the air forced-ventilation device is arranged on the mobile platform and is communicated with the cooling plate by the air guiding pipe; the cooling plate is also hinged with the mobile platform by the supporting arm; the mobile platform comprises a working platform, traveling wheels and a pushing handle; the air forced-ventilation device comprises an air-exchange fan and a cooling device; and the cooling plate comprises a supporting frame, a cooling device, a heat exchange plate, radiating fin plates and an air filter. The emergent cooling and refrigerating device has good mobility and refrigerating and cooling performances, and can be flexibly applied to emergent cooling and forced cooling operation of multiple types of large internet servers, so that on the one hand, the emergent cooling and refrigerating device is conductive to enhancing the continuous operation capability of the internet servers, and on the other hand, the emergent cooling and refrigerating device is also conductive to improving the operation environment of the internet servers and increasing the operation performance of the internet server equipment.