Building block prefabricating equipment and method suitable for municipal road excavation and backfill construction

The invention discloses building block prefabricating equipment and method suitable for municipal road excavation and backfill construction. The equipment comprises a frame, and a feeding and stirring device, an aggregate weighing device, an aggregate uniform dispersing device and a building block forming device which are sequentially mounted on the frame from top to bottom; the feeding and stirring device is used for mixing and stirring excavated soil, a binder and an additive and then conveying the mixture to the aggregate weighing device; the aggregate weighing device is used for weighing the mixed soil material conveyed by the feeding and stirring device and conveying the mixed soil material reaching a set value to the aggregate uniform dispersing device; the aggregate uniform dispersing device is used for dispersing the mixed soil material conveyed by the aggregate weighing device, so that the treated mixed soil material uniformly falls into the building block forming device; the building block forming d