Heavy metal chromium in chrome-containing wastewater is present in the form of Cr6+ and Cr3+, of which Cr6+ is the most toxic and has a content of 60 g/L. In traditional chemical reduction methods with sulfites, because more sulfites is added， a large number of suspensions are generated, solids and liquids cannot be separated， and Cr6+ cannot be oxidized completely, and several times dilution will produce a large amount of wastewater. The comprehensive treatment method was used to remove Cr6+ in the waste water which ensured that the total chromium content in the wastewater is up to the standard.