Water supply and drainage system of water supply and drainage integrated module and building

The invention provides a water supply and drainage integrated module. The water supply and drainage integrated module comprises a module body and a pre-placed pipeline, wherein the module body comprises a box body structure which is formed by casting or welding or punching of a metal material, the pre-placed pipeline is arranged in the module body, and a filling material is arranged between the pre-placed pipeline and the module body. Thus, in construction of a building, only the water supply and drainage integrated module needs to be mounted in a reserved hole (such as an equipment wellhead) of each floor and then risers are mounted between the upper and the lower floors so as to complete mounting and connection work of vertical pipelines in the building; compared with the layout of upper and lower pipelines of the traditional floors, the reserved holes do not need to be cast in situ for sealing, field formwork, cast-in-situ concrete, form stripping and maintenance are not required, and the water supply and drainage integrated modules only need to be directly fixed in the reserved holes; and furthermore, the mounting speed is very high, the environmental pollution is low, field organizational fittings are few and the assembly workload is low.