The invention discloses an electric furnace zinc-smelting tail gas recovery system and a control method thereof and aims at providing the electric furnace zinc-smelting tail gas recovery system and the control method thereof with the high safety. The electric furnace zinc-smelting tail gas recovery system comprises a safe partition device arranged on a setting pipe, a first buffer, an efficient washer, a second buffer, a water ring type compressor, a separator, a third buffer, a fire arrester and a drying kiln, wherein the first buffer, the efficient washer, the second buffer, the water ring type compressor, the separator, the third buffer, the fire arrester and the drying kiln are connected in sequence through pipelines; an inlet of the first buffer is communicated with the tail gas exhaust position of the top of an electric furnace through the pipeline provided with a second valve; a fifth valve is arranged on the pipeline between the water ring type compressor and the separator; an outlet of the efficient washer is communicated with an inlet of the fifth valve through the pipeline provided with a fourth valve; a ninth valve is arranged on the pipeline between the fire arrester and the drying kiln, and the pipeline between the fire arrester and the ninth valve is communicated with a setting branch pipe with an eighth valve; an inlet and an outlet of the water ring type compressor are communicated through the pipeline provided with a sixth valve.