reported that the EPS recycling mainly has three kinds of methods. The first is material recycling, which is reducing EPS in volume by heating, solvent, or friction at first, and then PS can be recovered as an ingot or pellet, and reused into raw material, daily products, construction material and so on. The second is chemical recycling, which is aimed at recovering the styrene monomer to reuse as chemical resource. The third is thermal recycling, an effective method for the contaminated waste EPS, by which the waste EPS can be used for energy generation through combustion.