Abstract: The detoxification of chromium residue using yellow phosphorus tail gas was researched. Experimental approach and process conditions: chromium residue， which contained 1% Cr（Ⅵ）［w（Na2CrO4）］，was crashed to 75 μm below.Then， 5 g sample was took into quartz tube，reaction occurred in 600 ℃ for 20 min，and reactants was protected in yellow phosphorus tail gas till to cool below 200 ℃.Experiment results showed that，Cr(Ⅵ) in chromium residue could be reduced to 0.3 mg/kg，and had none brightness reversion phenomenon.

Key words: chromium residue, detoxification, yellow phosphorus tail gas, solid waste, gas waste