he characteristics of lowpermeability reservoirs are lower porosity, lower permeability and in homogeneity. But there are some probable favorable higherpermeability blocks against the background of widespread low permeability because inhomogeneity. In this case, these higherpermeability blocks probably form petroleumgathering blocks locally if petroleum is enough. Proceeding from the petroleumaccumulation system of sedimentary facies pore featurepetroleum migration and accumulation, the author has proposed a method of prediction and predicted of the local petroleum gathering blocks in the lowpermeability reservoirs of the Yanchang Formation in the Qinghua area, Ordos basin. Exploration has verified that a certain success has been achieved in the prediction