Abstract: Based on the data of dynamic and static rock mechanics experiments and other supporting experiments, the ratio of Young’s modulus to Poisson’s ratio is preferred as the method to characterize the static brittleness index, a dynamicstatic brittleness index conversion model based on porosity and clay content is established and the static brittleness index can be calculated. Finally, the influence of burial depth on brittleness indexes is studied, burial depth correction is performed, and then a relatively sophisticated rock static brittleness calculation method considering burial depth correction is established on the basis of logging data. The calculation results of the rock brittleness are consistent with the results of core static brittleness experiment in the study area, and the method has been widely used in production