The construction reject is in the building construction, the service, the demolition process produces, mainly is the solid reject, including the waste cement block, the asphalt cement block, in the construction process scatters the waste material, each kind of packing material and other rejects which the mortar and the concrete, the broken brick dregs, the metal, the bamboo lumber, the decoration repair produces and so on. In view of the fact that the construction trash composition characteristic and it produces in the construction project scene actual situation, its recycling took the building material, is constructs the waste disposal use the effective method. This article has carried on the comprehensive investigation and the summary to the domestic and foreign construction trash government present situation and the comprehensive utilization technology, has analyzed the construction reject ingredient and the characteristic, has conducted the system analysis research to our country construction reject comprehensive utilization and the construction energy conservation question, and proposed suits our country national condition the construction reject circulation in the construction energy conservation comprehensive utilization.