In order to solve the oil remaining serious,injection and extraction effect issues in Huachang field of Fushan sag,combined with the actual situation in the region,using the core data,logging data,layer,interlayer and plane heterogeneity of Huachang field flow for a period in Fushan oilfield were studied. The results show that the coefficient of variation of permeability,the coefficient of the breakthrough and the range of the reservoir in the first section of the flow field are stronger,and the mean coefficient is lower. From the interlayer distribution,the study area flow reservoir Ⅱ and IV oil group is relatively strong;the study area is mainly affected by the strong reservoir heterogeneity,sedimentary structure,permeability heterogeneity,interlayer distribution and non control factors such as particle size rhythm;interlayer heterogeneity is mainly affected by the thickness,sandstone thickness and interlayer thickness. Large differences exist in different horizons. The plane heterogeneity is influenced by the distribution of sand bodies and sedimentary microfacies. It is concluded that the oil reservoirs in the study area are favorable for the remaining oil distribution.