A silicon carbide micro-powder recycling agent is made of raw materials including, by weight, 30-34 parts of diesel, 4-6 parts of diltiazem nitrile ester, 4-5 parts of isopropyl ethyl ammonium sulfate ester, 2-3 parts of phenethyl cumenyl phenol polyoxyethylene ether, 1-3 parts of benzoquinone dioxime, 3-5 parts of tall oleic acid, 1-2 parts of benzoxazole sulfur alcohol, 30-35 parts of methanol, 4-5 parts of auxiliaries and 35-40 parts of water. By the aid of various solvents and water, a stable emulsion system is formed under the action of surfactants, interfacial tension of silicon and silicon carbide is changed, the silicon is more thoroughly separated from the silicon carbide by the aid of the auxiliaries, and the obtained silicon carbide is higher in purity. Silicon carbide micro-powder is efficiently recycled at low cost, and the economic benefit of enterprises is greatly improved.