Water quality of raw water was investigated, and the removal efficacy of dissolved organic matter was analyzed during the traditional drinking water treatment plant. The removal of dissolved organics in raw water was compared and discussed during the different treatment processes enhanced by powder-activated carbon or magnetic ion exchange resin. And the optimal combined process was obtained. The raw water was polluted by seasonal organics, and the hydrophilic components accounted for 80% of total organic matters approximately. The 20%~30% of dissolved organic matters were removed by the traditional drinking water treatment process. Compared with other treatment processes, the process of resin pre-adsorption coupled with coagulation had the best efficacy for the removal of dissolved organic matters, and the removal efficiency of DOC and UV254 was 41.48% and 80.0%, respectively. Compared with the enhanced coagulation, the removal efficiency of DOC and UV254 was improved by 17.7 and 35.49 percent by the process mentioned above, and the dosage of coagulant was reduced by 86.67%. Langmuir isotherm model and pseudo second-order kinetic equation could describe the equilibrium and kinetics of dissolved organic matters adsorbed on resin. Magnetic ion exchange resin pre-adsorption can be used as a reliable technology to enhance the traditional drinking water treatment process for the removal of dissolved organic matter from raw water.