Abstract: According to the need of Shengli Beach Oilfield, deep profile control system is developed. Size of the system is small, so it can be put on the offshore platform. In this system, emulsion polymer is dissolved in the seawater and mixed with the cross-linker evenly before entering formations. Moreover, it overcomes the influence of bad sea conditions and large amount of profile control agent goes into the stratum continuously. The pilot test indicates that the system can be used in Shengli Beach Oilfield for deep profile control, and it can also speed up the rate of the exploitation and enhance oil recovery.