Abstract: Aiming at low fatigwe performance of traditional complex asymmetric 7075 aluminum alloy cantilever loop die forging after cutting process, preformed part was obtained based on the volume-invariant principle. Then the full fiber forming process was proposed, which is preforming first and then finally forming. The Deform-3D software was used to establish a three-dimensional finite element model of a complex asymmetric cantilever ring full-fiber preform, and the reliability of the model was verified by experiments. Based on the established simulation model, the metal flow, temperature field, equivalent stress field and equivalent strain field during the forming process were analyzed, and the laws of the generation, development, and evolution of the inhomogeneous deformation were revealed. The results show that as the forming temperature rises, the forming load is gradually decreased, but the change trend slows down and the load value is relatively close at 400-440 ℃; the equivalent stress is gradually reduced, that is, the deformation resistance gradually decreases with the temperature rising.