The invention relates to a separating-cooling-washing integrated oxyhydrogen machine belonging to an oxyhydrogen machine technology. The prior oxyhydrogen machine has high cost, more equipment faults and industrial accidents, inconvenient use and maintenance trouble. Two cooling-washing tanks (18) with the same structure and function are arranged on the top of the separating-cooling-washing integrated oxyhydrogen machine. The outer wall of each of the cooling-washing tanks (18) is provided with a clamping sleeve in which a condensation pipe (13) is arranged; the upper part of the clamping sleeve is connected with a condensed water supply pipe (14); a demister (15) is arranged at the upper part inside each cooling-washing tank (18); the outer wall at the upper part is connected with a washing water inlet pipe (17) and an air outlet pipe (16); and the lower part is provided with an electrolyte backflow pipe (8). The invention has the advantages that separating, cooling and washing functions are integrated and the working reliability of the oxyhydrogen machine is greatly improved; the oxyhydrogen machine has small volume and low cost; and the prepared hydrogen and oxygen have high degree of purity.