Abstract: By introducing the sludge conveying system of several domestic sludge blending combustion projects,the main technical schemes of sludge unloading,conveying,storage and batching systems are studied.In view of the lack of relevant standards for sludge blending combustion in China,the selection of key parameters of sludge blending combustion conveying system is discussed,so as to provide technical reference for the design of sludge conveying system of sludge blending combustion power plant.