Abstract: Abstract: In response to the complex mechanism of alloy elements on metal materials, this study takes Al Cu Ce alloy material as the experimental object, and explores the influence of alloy elements Mn and Fe on the microstructure and properties of alloy materials through metallographic microscopy, thermal analysis, and mechanical property testing. The research results show that in the microstructure after heat treatment, the higher the content of Mn element, the more uniform the distribution of metal materials in all directions, while the higher the content of Fe element, the more needle like the number is. Compared with the metal material before heat treatment, the metal material RE, TS, and YS with 0.6% Mn element content after heat treatment increased by 30.03%, 42.86%, and 25%, respectively; The TS and YS of the metal material with 0.4% Fe element after heat treatment increased by 4.33% and 9.83%, respectively. The above results indicate that the research method can select optimization methods and alloy elements according to the actual needs of alloy materials, and clarify the mechanism of alloy elements on metal materials.