Abstract: According to the test of oil exploration, the production of oil wells, indoor tests and logging data, oil-water distribution law can be studied. The results show that the oil and water have the zoning feature in the plane, for specific performance, the oiliness of the east is high, the oiliness of the center is poorer, and the oiliness of the west is good. Beside, the oil and water have the characteristic of differentiation in vertical, and the layers which full of oil are from PⅠ6 to PⅠ8.The main controlling factor of the distraction of oil and water includes: faults and structural location decide the plane characteristic of oil and water. In the background of facies of delta front, underwater distributary channel sandbody is the high-quality reservoir of Putaohua reservoir. NNW direction faults and underwater distributary channel is the best matching for controlling oil.