This study investigates the seismic performance of Emulative Hybrid Assembled Precast Concrete Shear Walls (EHSW) using OpenSees, a nonlinear finite element analysis software. The research focuses on enhancing the structural behavior of EHSW through prestressed connections and grout-anchored overlap technologies. A fiber element model is established to simulate the hysteretic behavior, ductility, and energy dissipation capacity under cyclic loading. Various structural improvement measures, including the position, type, and bonding condition of prestressed tendons, as well as vertical reinforcement connection schemes, are analyzed to optimize the seismic performance. The results demonstrate that adjusting the prestressed tendon position significantly improves the load-bearing capacity and stiffness, while unbonded prestressed tendons enhance energy dissipation. The study concludes with an optimized structural design that achieves superior seismic performance, providing a reliable reference for the application of EHSW in seismic regions.