Two different types of horizontal connections for precast concrete shear walls are proposed and tested to evaluate their seismic performance. One is dry connection with vertical reinforcing bars anchored into the grout-filled metal bellows embedded in the precast wall, while the other is hybrid connection where the boundary elements are formed by locally placing concrete with vertical reinforcing bars lapping in the cast-in-place concrete, and the reinforcing bars placement is the same that of the dry connection. Three full-scale specimens of the dry connection, hybrid connection, and cast-in-place connection were prefabricated and tested under the low-cycle reverse loading. The measured results showed that both the precast specimens performed similarly, such as the strength, stiffness, displacement ductility, and energy dissipation capacity, and they possessed comparable seismic performance when compared with the cast-in-place specimen. Meanwhile, the seismic behavior of the hybrid connection was obviously dependent on the pouring quality of the locally placing concrete. Because of the complexity in the construction technology for the concrete placing of hybrid connection, it is difficult to ensure the quality, and the seismic performance is considerably weakened. Therefore, it is not recommended to apply the hybrid connection in precast concrete shear walls.