In order to study the improvement effect of cement-basalt fiber on the dynamic properties of red clay in Kunming area, based on the existing laboratory experiments, the unmodified red clay and the modified red clay with 12% cement and 0.5% basalt fiber were respectively tested. Indoor dynamic triaxial tests are carried out under certain confining pressure and loading frequency, and the effects of confining pressure, frequency and wet-dry cycle on dynamic deformation properties and dynamic strength properties are emphatically analyzed. The test results show that the dynamic characteristics of the red clay before and after the improvement are different. The dynamic stress amplitude and dynamic strain amplitude before the improvement conform to the hyperbolic model, while the dynamic deformation of the improved red clay shows linear elasticity as a whole, which is in line with the linear regression model and the Logistic regression model. The maximum dynamic elastic modulus of the improved red clay increases significantly, the damping ratio decreases significantly, the dynamic failure mode changes, and the dynamic strength increases significantly. The influence of confining pressure, frequency, and dry wet cycles on the dynamic characteristics of the improved red clay is analyzed, and the relevant parameters are proposed