In order to make better use of the Cole-Cole dielectric mathematic model to diagnose the damp-state of oil-immersed bushing, it is necessary to analyze the effect of temperature on the Cole-Cole dielectric model paremeters of oil-immersed bushing. In this paper, 72.5 kV oil-immersed bushings are produced in laboratory, and the frequency-domain dielectric response tests of oil-immersed bushings are carried out at different test temperatures. The experimental data are fitted by using the modified double relaxation Cole-Cole dielectric model, and the influence of temperature variation on the Cole-Cole dielectric model parameters is analyzed. Results show that the relationship between the DC conductivity σ_dc and the thermodynamic temperature T in the Cole-Cole dielectric model of oil-immersed bushing is consistent with that in transformer, the Arrhenius relation is satisfied; however, the relaxation time and relaxation strength are quite different from those of transformer; the relaxation time τ₁ decreases exponentially with the increase of test temperature; τ₂ decreases with the temperature rise and there is a slowdown in the process of change; the relaxation strength Δε₁ exponentially increases with the increase of test temperature; Δε₂ shows a tendency to increase first, then decreases and then increases with the increase of test temperature.