The management decision fault during prophase demonstration, design and operation on power station can be avoided effectively by technical and economic evaluation of power station project. In this paper, the sintering circular-cooler waste heat power station in WISCO is taken as an example. Through analyzing the two methods of technical and economic evaluation on power plant and constructing the evaluation system of sintering waste heat power plant, the technical evaluation on overallcondition of power plant is made by adopting the ways of contrastive analysis, and index weight value of power plant is computed by analytic hierarchy process, then power station is evaluated through combining the two evaluation methods. And the bandwidth of net power output basic parameters of per ton of sinter waste heat is determined. The study results can provide reference basis for the initiating project and technology decisions of waste heat power station.