This paper studied the effects of different concentrations of natural dissolved organic matter( DOM) on the passive sampling technique. The results showed that the presence of DOM affected the organic pollutant adsorption ability of the membrane. For lg KOW3-5,DOM had less impact on the adsorption of organic matter by the membrane; for lg KOW> 5. 5,DOM significantly increased the adsorption capacity of the membrane. Meanwhile,LDPE passive sampling technique was applied to monitor PAHs and PAEs in pore water...