The invention provides a novel prefabricated cantilever retaining wall adopting a bolt connection mode. A precast bottom plate is internally provided with embedded connection bolts, a precast panel isprovided with reserved holes matched with the embedded connection bolts, the precast bottom plate is laid with a bed mortar material, the embedded connection bolts of the precast bottom plate are connected with nuts after passing through the reserved holes of the precast panel, and the panel and the bottom plate are connected into an integral structure; and retaining wall segments are connected in the longitudinal direction through longitudinal reserved bolt holes and bolts arranged in the precast panel and the precast bottom plate. The type of retaining wall is convenient for factory prefabrication, transportation and site installation, connection of rebars on site is reduced to the maximum extent, the workload of concrete pouring is reduced to the maximum extent, the concrete curing time is shortened to the maximum extent, the construction period of the retaining wall is effectively shortened, and the strength and stability of wall connection can be guaranteed; and connection is reliable, the structure is simple, construction is convenient, the quality of connection of precast parts is easy to ensure, and the good promotion value is achieved.