The invention relates to drilling processing, and provides a micro hole processing device. The micro hole processing device comprises a high speed drill, wherein the high speed drill comprises a plurality of main shafts, a plurality of chipping suction covers, an electric control system and a cooling device, each chipping suction cover is provided with a dust collection pipeline, the cooling device is provided with a plurality of liquid guiding pipes, each chipping suction cover is provided with a liquid guiding pipeline, and each liquid guiding pipe stretches into the corresponding chipping suction cover along the corresponding liquid guiding pipeline. The invention also provides a micro hole processing method. The micro hole processing device is adopted by the micro hole processing method, and the rotating speed of a drilling tool is 15-120 Krpmin, and the feed amount of the drilling tool is 0.01-0.4 m/min. According to the micro hole processing device and the micro hole processing method, provided by the invention, the high speed drill is additionally provided with the cooling device, cooling liquid is guided into the chipping suction covers through the liquid guiding pipes, cooling and lubricating effects on the drilling tool can be formed, the broken rate of the drilling tool is greatly reduced, liquid accumulation is unlikely formed on a working platform, the rotating speed and the range of the feed amount of the drilling tool are limited when a micro hole is further processed, the drilling requirement can be met, and the broken rate of the drilling tool can be further reduced.