Objective:To explore clinical effects of Yanghe Tang and Fuzi Tang combined with traction in the treatment of lumbar disc herniation(LDH)of cold-dampness obstruction pattern.Methods:All 94 patients were allocated to the control group and the observation group in light of random number table method,47 cases in each group.The control group was treated with intermittent traction,and the observation group orally took Yanghe Tang and Fuzi Tang based on intermittent traction,two weeks were one course of the treatment,and both groups were treated for two courses of the treatment continuously.To observe the expressions of TNF-α and IL-1β,whole blood viscosity,plasma viscosity,erythrocyte aggregation index,VAS scores and ODI scores before and after the treatment in the two groups,to compare clinical effective rate and adverse reaction between both groups.Results:After the treatment,the levels of TNF-α and IL-1β,whole blood viscosity,plasma viscosity,erythrocyte aggrega-tion index,VAS scores and ODI scores were lowered than before the treatment in the two groups(P<0.05),and the above indexes of the observation group were lower than these of the control group(P<0.05);Clinical effective rate of the observation group was 97.87% (46/47),higher than 82.98% (39/47)of the control group(P<0.05);no obvious adverse reaction occurred in the two groups.Conclusion:Yanghe Tang and Fuzi Tang combined with traction in the treatment of LDH of cold-dampness obstruction pattern could improve clinical effects,relieve clinical symptoms,promote the recovery of lumbar function,and its mechanism might be related to lowering the levels of inflammatory factors,relieving local inflammatory response and improving blood viscosity.