The temperature of thrust bearing bush TE-12811A/B of turbine DST-201 has continuously increased and reached 120℃, the alarm value. High bearing bush temperature will accelerate the oxidation of lubricating oil and form a hot paint film on the surface of bearing bush. To effectively prevent the formation of paint film and remove the soft pollutants in the system, solubility-enhancing oil DECON was injected into the lubricating oil. After injecting the enhancing oil, the temperature of thrust bearing bush TE-12811A/B decreased by 5℃. By replacing the thrust bearing bush and upgrading the material of bearing bush to copper-chromium alloy, the bearing capacity of bearing bush was improved, the thermal conductivity efficiency of bearing bush was increased, and the temperature of bearing bush was reduced, fundamentally solving the problems such as the temperature fluctuation and high temperature of bearing bush.