 Overpressure is a common phenomenon found in sedimentary basins. This paper proposes for practical methods to analyze its origin and predict its occurrence with greater accuracy. These methods are based on various factors, including burial history, rock properties, mechanical models, and data quality. Applying these methods to two real-world cases, the authors were able to revise their understanding of the origin of overpressure in one case and improve the accuracy of pressure predictions in another. This article was authored by Ziyang Su, Shen Lu, Jingzhou Zhao, and others.