The invention discloses a self-adaptive protection early warning device for a cloud computer, and belongs to the technical field of cloud computers. Self-adaptive protection early warning equipment for a cloud computer comprises a case and a cover plate mounted on the case, a filter screen is fixedly connected in a heat dissipation hole, a cleaning mechanism for cleaning and brushing the filter screen is arranged on the case, and a water cooling mechanism for cooling the case is arranged on the cleaning mechanism; according to the invention, by arranging blades, when the temperature in the case rises, the blades rotate to cool the interior of the case, and by arranging the cleaning mechanism, when the blades extract external air to cool the case, dust in the air is attached to the filter screen, and the dust can be cleaned in time, so that the air inside and outside the case circulates smoothly; the cooling effect on the interior of the case is further enhanced by arranging the water cooling mechanism, meanwhile, when the temperature is too high, the fluorinated liquid expands to enable the blades to rotate by a certain angle, the air inlet amount is increased, rotation is not conducted when the temperature is too low, and therefore power consumption of the motor is reduced, and electric quantity is saved.