The invention relates to a cleaning and dust collecting method of volatilized zinc oxide and a device thereof. Low grade zinc material is reduced and volatilized in a metallurgical furnace with reducing atmosphere; volatilized flue gas enters a spraying-cloth bag tower via an oxidizing chamber and a surface cooler; the zinc oxide in the flue gas is collected; fluorine and chlorine enter spraying solution; sulfur dioxide forms ZnSO3 to enter secondary zinc oxide paste; after the secondary zinc oxide paste is separated through filter pressing, the filter liquor returns to be circularly used; and filter residue is secondary zinc oxide product. The invention has the advantages that fluorine, chlorine and sulfur dioxide in the flue gas can be removed during the dust collection process, so as to enable the secondary zinc oxide to be directly used as the raw material for producing electrolytic zinc, the technological process can be reduced, the investment can be saved, and the invention is energy-saving and environment protective.