A method for the determination of four emerging plasticizers in plastic track surface was developed by gas chromatography-tandem mass spectrometry (GC-MS/MS). The shredded plastic track surface were extracted by ultrasonic extraction with 20 mL ethyl acetate at 62 ℃ and 180 W for 41 min, and filtered through 0.22 μm polytetrafluoroethylene (PTFE) membrane. The target compounds were separated by TG-5SilMS column, and then determined by selective reaction monitoring (SRM) mode under electron bombardment source (EI), and quantified by external standard method. The response surface methodology (RSM) based on Box-Behnken design was used to determine the optimal values of ultrasonic temperature, ultrasonic time, and ultrasonic power in the ultrasonic extraction method. The results showed that the correlation coefficients (r² ) of four emerging plasticizers were all over than 0.999 in the linear range of 0.05~2.00 mg/L, the limits of quantification (LOD) were 0.4~0.8 mg/kg, the average recoveries ranged from 95.5% to 114.5%, with relative standard deviations (RSD) of 2.3%~5.8% (n=6). This method was used to detect 30 batches of plastic track surface. As a result, the emerging plasticizers were detected in 23 batches of plastic track surface in varying degrees. The highest detection rate of DOTP was 66.7%, and the highest detection concentration of DOTP was 6.3×10³ mg/kg. The method was simple, accurate, and suitable for the determination of four emerging plasticizers in plastic track surface.