To solve environmental pollution problem caused by electromagnetic wave radiations, frequency selective surface(FSS) composite of cement based electromagnetic wave absorbing material was prepared by using waste polyethylene terephthalate(PET) broken bottle chips and polypropylene fiber as electromagnetic wave absorbing materials and reinforcement. The waste PET chips have the advantages of low cost, light weight, thin thickness, high strength and simple processing technology. Three types of FSS such as closed, open and combined type were compounded on the surface of cement matrix. It greatly improves the absorbing properties in 218GHz band. The combined type FSS with 1ring has the best absorption performance in S band(24GHz), the minimum value of reflection loss（RL） achieves -199dB at 25GHz and the ratio of less than -10dB absorption band width is 475%. The influence of unit size and number on absorbing properties exhibits different characteristics between the S band and 418GHz band.