Abstract: This paper studies Mn determining in aluminum bronze alloy by ICP -AES. The selections of the analytical wave -length, the co -existent elements and instrumental parameters are discussed by identifying the appropriate wave-lengths. We basically solve the interference among the subjected elements and base elements. The aluminum bronze samples are recycled for precision and recovery experiments. Results show that the relative standard deviation is lower than 5 % with recoveries ranging from 95 %~105 %.