Abstract: An imprinted polymer selective to plasticizer dimethyl phthalate (DMP) was developed and applied to solid phase extraction media to extract DMP in an environmental water sample successfully.Four imprinted polymers were prepared with varied functional monomers and polymerization methods.Their binding activities to DMP and its analogue dibutyl phthalate (DBP)were estimated by equilibrium adsorption experiments.The optimized polymer MIP3 was further used as a solid phase extraction material to enrich DMP in an environmental water sample.The obtained data from gas chromatography-mass spectrometry (GC-MS) analysis showed an excellent selectivity of MIP3 to DMP in the real sample.DMP was enriched from 8.2g/L to 80.06g/L with an enrichment factor as 9.76.The system gave better average recoveries between 99.16%～103.97% and a lower limit of detection (LOD, S/N=5) as 0.007g/L for DMP compared to a traditional liquid-liquid extraction method (0.04g/L ).