本文阐述了研究声波时差——孔隙度关系时计算总孔隙度公式中系数值的修正问题。声波时差——孔隙度统计关系呈非线性。所提出的关系式有较好的普遍性和较高的精确度。 This article describes the correction of the coefficient values ​​in calculating the total porosity formula in the study of the relationship between the acoustic time difference and the porosity. Sonic time-porosity statistical relationship was nonlinear. The proposed relationship has good universality and high accuracy.