Polystyrene can be used in the fields of electronics, medical, food, and household goods; this dataset includes the main raw materials, auxiliaries, energy, atmospheric emissions, water emissions, and waste of the production process. Infrastructure such as production equipment and factory construction is not included in the dataset boundaries; the data inventory is taken from literature data; the production process of polystyrene includes raw material preparation, polymerization, monomer stripping, filtration and separation, washing, and drying processes.