Due to the strong heterogeneity of Tahe oilfield fracture-vug carbonate reservoir, there exists some factors greatly influencing the effect of the unit waterflooding development, such as the fuzzy understanding of fracture-cave body distribution between wells and large scale fracture channel connectivity in injection layers. Through a comparative analysis of the characteristics of seismic curva? ture, using the seismic reflection angle, discontinuity and maximum curvature attributes, the seismic facies, images’micro fracture -fracture system were analyzed. The fissure-cave connected spatial form was depicted. The extending direction of the large scale fracture was tracked. When waterflood is performed in the fracture-vug reservoir, the depicted fracture-cave connectivity distribution can guide the deployment of the injection and production wells and optimize their relationship; based on tracking the trend of large-scale crack, the main direction of waterflooding can be predicted. Through the application in the field, the geological basis for fracture-vug reservoir in injection and production wells can be provided and their deployment can be optimized. The establishment of the network of injection and production wells and prediction of effective direction of water injection can be realized.