Objective:To study the clinical efficacy and lower limb temperature difference of bipolar radiofrequency combined with ozone in the treatment of lumbar disc herniation(LDH).Methods:A retrospective study was conducted on 105 inpatients with LDH. All patients were treated with bipolar radiofrequency combined with ozone. The interdisc impedance of the main electrode was measured before and after treatment, and the absolute temperature difference of infrared thermal imaging of both lower extremities before and after treatment was analyzed. Vasual analogue scale (VAS) score, JOA score and modified Macnab standard were used to evaluate the curative effect after treatment.Results:The VAS score after treatment was significantly lower than that before treatment( P<0.05), and the JOA score after treatment was significantly higher than that before treatment( P<0.05). The intervertebral disc impedance after treatment was significantly lower than that before treatment( P<0.05). The temperature difference between leg and plantar after treatment was significantly lower than that before treatment (all P<0.05). Conclusions:Bipolar radiofrequency combined with ozone therapy can relieve pain and improve function in patients with LDH. Infrared thermal imaging can sensitively reflect the changes of body surface temperature of lower extremities in patients with LDH, and has a certain value in the diagnosis and curative effect evaluation of LDH.