The invention discloses a method for recycling and utilizing kiln slag of wet-method zinc-smelting volatilizing kiln, which comprises the following steps: (1) washing and selecting the kiln slag from a volatilizing kiln with waterpower in a slag washing pool so as to recycle a part of coke to obtain recycled coke; (2) crushing the kiln slag of which a part of coke is removed until the grain diameter of the kiln slag is 2mm or below; and (3) magnetically separating the crushed kiln slag by using a magnetic separator of which magnetic density is 800 to 1,800 oersted to obtain secondary coke and iron slag. The method of the invention has the advantages of effectively recycling carbon and metal elements in kiln slag of the wet-method zinc-smelting volatilizing kiln and well realizing resource recycle.