Abstract: In the Jianghe Disposal Central of Oil and Water, several sewages flowed into the sewage tank directly, then into the setting tank,thus caused amount of Disposal work to raise and quality of water to go to the bad. Therefore require to improve technological process and equipments. The disposal steps after improvement are:l. the sewages to enter a system of separating sand and Oil, 2. to be damped and settled, 3. to enter the sewage setting tank. Through these improvements, we insured good quality of injested water for oil field.