Abstract:The main factors influencing the method of determination of total chromium in chromite by ammonium ferrous sulfate titration was investigated. The flux Na202 was used for sample decomposition, and the analysis results were in agreement with the standard value with precision of 0.24%~0.34% RSD(n=8）on several types of chromite analysis under the operation condition of controlling the sample particle size is below 0.12mm , keeping at 600℃ for 12mins in decomposition, adding 200g/L ammonium persulphate with 5ml in the H2SO4 and H3PO4 mixed acidic medium to achieve the oxidation effect in sample analysis solution, and without adoption of AgNO3 . The method provides the way of simple operation，short process with good precision and accuracy, which can satisfy the requirements of determination of total chromium in chromite.