In order to explore the effect of multi-directional forging on the microstructure and mechanical properties of aluminum alloy, this paper takes the homogenized Er7050 aluminum alloy as the research object. The alloy was subjected to multi-directional forging of three different forging passes at 400 ° C, namely three-pier three-pull ( 3U3CS ), six-pier six-pull ( 6U6CS ) and nine-pier nine-pull ( 9U9CS ). Subsequently, the alloy was subjected to solid solution treatment, water quenching and T6 aging treatment. The microstructure and mechanical properties of the samples were analyzed. By comparing the mechanical properties of the samples obtained by three different forging processes, we found that the samples treated by the Jiudunjiuba forging process have the best mechanical properties, which is attributed to its fine grains and dense precipitated strengthening phases. The average tensile strength of the sample under this forging process is 621.4 MPa, the average yield strength is 545.4 MPa, and the average elongation is 13.10 %, which indicates that the optimized forging process significantly improves the mechanical properties.