Since the start of“Eleventh Five-Year Plan”, the polymer flooding units in Henan oilfield have been in ultra-high water cut stage before injecting polymer, which has resulted in longer responding time. It is the key to maximize the proportion of effective corresponding wells, effective thickness and effective multiples in dynamically adjustment of polymer flooding. With methods of reservoir engineering, numerical simulation and field test, policy limits of polymer flooding dynamic adjustment are studied in this paper. Also, according to different stages of responding of polymer flooding and different factors that affect the performance of corresponding wells, the process control technology of improving the effect of polymer flooding is studied, including reasonable production and injection rate allocation technology, edge water control technology, polymer concentration differences adjustment technology, polymer channeling control technology, long term closure layer with high water cut evaluation and utilization technology and polymer flooding moderate extracting technology. The effect of application of the six process control technology in Shuangbei H3Ⅳ1-3 series of strata is significant and the effect of actual oil increase is better than numerical simulation forecast. When 0.56 PV polymer is injected into the reservoir, it can improve recovery by 2.83%.