As to the general issues of adjustment in waterflooding oilfield development,we develop an integrated evaluation system of the oilfield's development and adjustment potential based on.NET technology.By combing the working experience of the reservoir engineers and the study results from numerical simulation,the quick and integrated evaluation of the producing performance is realized,the remaining oil potential and the adjustment potential in the waterflooding oilfield,which improves the efficiency of the planning of adjustment measures greatly.It has been used in the evaluation of the adjustment potential in SZ development area of Daqing Oilfield,which shows a good result.The system has the characteristics of easy-to-use,high-efficiency of running,good universality,etc.,which guarantees a very good application prospects in the oilfields.