Tight oil is mainly explored in Yudong area. Fuyang oil layer is developed longitudinally, with abundant residual resources and multiple reservoir types. The reservoir size is small, scattered and hidden, and it is difficult to find. In view of the above problems, a variety of technologies are jointly applied to form an innovative seismic interpretation method for small layers, improve the interpretation process of small faults, and carry out interpretation verification. On the basis of fine interpretation, the identification method of micro-amplitude structure is established to effectively recognize the micro-amplitude structure in this area. The sweet spot attribute is used to describe the channel effectively and the sensitive curve is inverted to predict the channel sand body effectively. By analyzing the influence of structure, fault, sand body, physical property and oil source on reservoir formation, the distribution characteristics of oil and water in Fuyu and Yangdachengzi oil layers are determined, the geological understanding of this area is deepened, and better drilling effect is achieved by using the research results to guide the programming.