The invention provides a method for determining the content of manganese, phosphorus, arsenic, potassium, sodium and copper in direct reduced iron. The method comprises the following steps: using the conventional inductive coupling plasma atomic emission spectrometry to determine spectral line strength of test sample liquid and getting the corresponding content values of the manganese, the phosphorus, the arsenic, the potassium, the sodium and the copper from standard working curves of the manganese, the phosphorus, the arsenic, the potassium, the sodium and the copper according to the spectral line strength, and the method is characterized by sequentially adding mixed acid of hydrochloric acid and hydrofluoric acid, nitric acid and perchloric acid into a test sample for dissolving, adding dilute hydrochloric acid for dissolving salts and filtering the dissolved liquid so as to prepare the test sample liquid. Not only is the operation convenient, but also the determined content of the manganese, the phosphorus, the arsenic, the potassium, the sodium and the copper is high in accuracy and the determination result further has good stability, reproducibility and accuracy. Tests prove that the method in the invention is reliable and practical and can meet the daily need of determining the content of the manganese, the phosphorus, the arsenic, the potassium, the sodium and the copper in the direct reduced iron.