Abstract: To study the effects of different filter functions on topology optimization of continuous structures with stress constraints,based on the ICM(Independent,Continuous,Mapping)method,the present work will focus on the investigation into the meaning and introduction of filter function,as well as the role of power type filter functions of elemental weight,stiffness and allowable stress in optimization modeling and solution.In addition,the effects of three filter functions on the optimal topology configurations are analyzed and discussed by numerical experiments,of which results show,the efficient and ideal topology can be achieved by reasonable selection of filter functions in optimization model.