The invention discloses a Fe<2+> content rapid analysis method for a LiFePO4/C composite anode material, which comprises the following steps of: a, dissolving the LiFePO4/C composite anode material by hydrochloric acid under the inert gas protection; and b, with the adoption of a potentiometric titrator, directly detecting the Fe<2+> content in the LiFePO4/C composite material through potassium dichromate as a dripping agent under the inert gas protection. The Fe<2+> content rapid analysis method provided by the invention simplifies the steps of removing carbon, prevents the reduction state and oxidation state materials from interfering detection, reduces the errors of an artificial judgment end point, simplifies the operation of adjusting the acidity and the temperature, greatly improves the defects of the existing method, and has the advantages of simplicity in operation, reliable data and the like. The basis is provided for the performances of the LiFePO4/C composite material.