The analysis method for optimization of locating seismic reduction device in passive control technique and corresponding mathematic model were presented.Combining with the model characteristics of optimization of seismic reduction device and mathematical principle of main optimization algorithm

genetic optimization algorithm was chosen for damper location optimization analysis.The algorithm was improved to increase optimization efficiency and improve calculating accuracy.Through compiling objective function in Matlab

damper location optimization program of seismic reduction device was established.Two different fitness functions were set up and damper location optimization of one plane frame and one bent were carried out.Results show that the optimization algorithm presented in this paper and corresponding program can realize the location optimization analysis of seismic reduction device effectively and accurately.