The effect of persistence, degradation dynamics of DBP (Dibutyl phthalate) and DEHP (di(2-ethylhexyl) phthalate) on core growth were studied in this work.Results showed that DBP and DEHP remainede in soil increased with experimental temperature raised, especially for DEHP.The remained amount of pathalate plasticizers decreased with the increase of soil water contend The degradation of these two chemicals in the soil can be described by the the first order kinetic equation of C=C₀e^-kt.The degradation of DEHP was strongly affected by environmental factors.Although DBP degraded faster than DEHP, the dependence of its degradation in soil on environmental fators was much smaller than that of DEHP.Results also indicated that the activities of soil micro organisms played a very mportant role in PAEs degradation in soil.Increase in activities of soil micro-organisms would accelerate the PAFs degradation rates and reduce the pollution of PAFs to soils.Results of field experiment with these two chemicals showed that a high dose of them restricted the growth of vegetable to some extent, especially for DBP.Meanwhile, it was also concluded that DBP and DEHP decreased the vegetable yield silghtly and reduced the Vc contents of eatable parts of vegetables.