Abstract: Polymerflooding Pilot began in 1992 in Shuanghe oilfield and polymerflooding has been put into use on some scale by now with notable economic benefits achieved. This paper mainly introduces the surface engineering technology design of high temperature polymerflooding in layer Ⅱ 4- 5 in Shuanghe oilfield.The technological process is that the mother polymer liquor is mixed centrally and then is transported to each polymer injection station through pipes. Electromechanical autocontrol technique is applied in the whole system. The concentration of the mother polymer liquor can be effectively controlled, enough maturation time for the mother liquor is ensured and the operating conditions of each part of the system can be monitored and controlled.