Abstract: By investigating the corrosive scalling status of downhole production string of pumping wells in Luliang Oilfield,the scalling factors of production string,indoor anticorrosive and scale prevention formula were studied.From the anticorrosive and scale prevention technical system,the optimized formula which is adaptable for Luliang Oilfield was chosen.The experiment plan was also made.By field experiment,the technical plan was optimized and the technical system with HEDP scale inhibitor and KL-601 modified corrosion inhibitor was established.By dynamically tracing the single well anticorrosive and scale prevention result,the protection period was optimized.The field experiment and industrial practice showed that the anticorrosive and scale prevention process can satisfy the production requirements,which sharply shorten the checking period of pumps.