Abstract: The pourpoint of IV53 formation of three - zone in Jinglou Oilfield is 48-56℃, which belongs to high pourpoint heavy oil reservoir. In view of the problem that the steam stimulation can not be applied in the process of normal development, displacement agent of high pourpoint heavy oil is developed through laboratory experiment After successful application of four wells in the working site, the production cycle has been prolonged, and the periodical crude production rate has been increases considerably, which is a technological breakthrough in high pour- point heavy oil production. It is suggested that the technique should be applied toward high pourpoint reservoir in Jinglou oilfield.