Abstract: The migration of pollutants like oil in groundwater before treated is simulated by the mathematical model. The parameters of quantity and quality models for water are given. When hydraulic capture zone runs,the mathematical model having been established is examined and predicted by the new monitoring information. The technique can not only remove the some pollutants like petrolium, but alsoprevent the high contaminative water from further diffusion,and this plays an important role in protecting source