Abstract: As the capacity of municipal solid waste landfills built in the early days of the city has become increasingly saturated, the current solid waste incineration power generation technology has gradually become an alternative to landfi ll.This article takes the design of the water supply and drainage system of a municipal solid waste incineration power plant as an example, introduces the composition of the water supply and drainage system of the waste incineration power plant and some precautions in the actual engineering design,in order to provide reference for related design.