Fiber metal laminates （FMLs） exhibit broad application prospects in the aerospace field due to their high specific strength， specific modulus， and excellent fatigue resistance.However，defects such as metal fracture， fiber buckling， and interlayer delamination during forming processes hinder their large-scale applications. This study focuses on the forming performance of FMLs， using TA2/CF/PEEK laminates as the research object. The deep drawing process of rectangular box components was simulated via finite element analysis to elucidate the forming mechanism. The results indicate that a symmetric fiber orientation of （-45/45/-45/45°） achieves superior forming quality： the strain distribution becomes more homogeneous， the stress concentration effect in the adhesive layer is significantly reduced compared to other orientations，and the minimum limiting thinning rate for all components and the optimal uniformity of thickness distribution.Experimental validation confirms the reliability of the simulation results， demonstrating that this layup design effectively enhances the forming quality of rectangular box components. The findings provide a theoretical basis for optimizing the structural design of fiber metal laminates.