The invention provides a ruling method for a three-dimensional induction logger. The method includes the following steps: a. placing the three-dimensional induction logger in a ruling device, wherein the ruling device is provided with solution with given electrical conductivity, then measuring response signals in the ruling device, b. according to ruling device model parameters, conducting numerical modeling and the simulating calculation on the ruling device provided with solution with given electrical conductivity, and then obtaining the equivalent and uniform stratigraphic model conductivity parameters, wherein the response signals of the three-dimensional induction logger in the equivalent and uniform stratigraphic model are the same as the measured response signals of the three-dimensional induction logger in the ruling device provided with solution with given electrical conductivity, c. establishing the congruent relationship between the response signals and the uniform stratigraphic model parameters according to the measured the response signals and the obtained equivalent and uniform stratigraphic model conductivity parameters. The ruling method for the three-dimensional induction logger is capable of conducting the ruling on the response of the three-dimensional induction logger conveniently and ensuring the higher precision at the same time.