The UPC2–MS/MS with dissolution-precipitation method was applied to the determination of the 22 PAEs from 34 PS plastic products such as disposable dishware, fruit plates, oilers and seasoning boxes, which were bought from local supermarkets in Shanghai. In these 34 tested samples, BBP was detected at the range of 0.6413–3.9770 mg/kg in all samples, DEHP was detected at the range of 0.2925–7.3511 mg/kg in 31 samples, DINP was detected at the concentration of 0.7786 and 1.8211 mg/kg in two samples, DIBP was detected at the range of 0.0610–2.7978 mg/kg in 16 samples, DBP was detected at the range of 0.0522–3.5711 mg/kg in 18 samples, other 17 phthalates were not found in these 34 tested samples (Table S2).