Abstract: At present,technology of ASP compound flooding has been used widely in Daqing oilfield.However,the turbidity method used for detection of polymer concentration during polymer flooding is still used for ASP compound flooding.Actual detection shows that the determination results of polymer concentration are greatly influenced by alkali and surfactant existed in ASP system.Through analysis of the influence factors on the detection results of polymer concentration and extent,the method for eliminating the influence of surfactant and alkali during the detection of polymer concentration has been found to improve the accuracy of detection results of polymer concentration in ASP system.