Method for the determination of high content copper used for iodine quantity method is still the ancient, the potassium iodide dosage is large, high cost, time-consuming, spectrophotometry andnewly developed because of unfavorable copper chromogenic agent problem in the determinationof high content of copper, so it is necessary to research, develop new chromogenic agent. The authors tried sodium acetate buffer solution to control the pH value, using ethylenediamine tetraacetic acid two sodium salt (EDTA) as chromogenic agent, determination of high contentcopper gold powder, at the same time using EDTA masking zinc, aluminum and other elements toeliminate its interference. Cu^2+ and EDTA to generate the 1:1 molar ratio of blue complexes, the maximum absorption wavelength of the complex is 2=730nm, molar absorption coefficient is =88.9,the copper ion content showed a good linear relationship in the range of 12-24mg/50mL, the linear regression equation is A=0.0354+0.02317c, correlation coefficient R= 0.9995. Determination of highcontent of copper in copper and gold powder by Spectrophotometry EDTA, the results are satisfactory, there are prospects of application development, especially in small enterprises, inrelatively simple laboratory equipment.