The standard Tong’s Chart has been widely used for recoverable reserves estimation and recovery calibration, and water cut prediction of medium-high permeability sandstone oilfields in the middle-late period of waterflooding development, but for the conglomerate reservoirs which has the complex mode pore structure and severe heterogeneity, is less adaptable. Based on the actual production data of 71 conglomerate blocks in the northwestern margin of the Junggar Basin, the generalized water drive chart of the conglomerate reservoir was established by revising the empirical coefficient "7.5" to 8.65 using the method of mathematical statistics, and introducing the water-oil ratio correction coefficient. Through the instance analysis, it is proved that the generalized water drive chart of conglomerate reservoir is well adaptable to the conglomerate blocks in Baikouquan oilfield, and it is as well as instructive for the water flooding development of the conglomerate reservoirs in the northwestern margin of Junggar basin.