Abstract:High purity aluminum powder is widely used in the field of powder metallurgy. Its carbon content has a great influence on the physical properties of materials. It is of practical significance to study the method of rapid and accurate determination of carbon content in high purity aluminum powder. In this paper, the carbon content in high-purity aluminum powder was determined by high-frequency induction combustion infrared carbon sulfur instrument. The results show that when the sample weighing is 0.1g, the flux is W+Sn+Fe=2.4g+0.2g+0.2g and the analytical power is 90% is the best condition of the experiment. The method was applied to the determination of carbon in the sample (mass fraction = 0.023%), RSD = 3.65, (n = 11). Carbon standard substance was added to the sample for standard addition recovery test. The recovery was 99% - 102.0%. The detection limit was 0.0003% and the lower limit was 0.0030%. This method can meet the requirement of rapid detection of carbon content in high purity aluminum powder.