To investigate the clinical efficacy of Buguheji Decoction combined with functional exercise on the improvement of lumbar vertebral function in patients with degenerative lumbar vertebral canal stenosis (syndrome of blood stasis due to qi deficiency) and its effects on the microcirculation and micro inflammatory state of the spinal canal.Methods:A total of 118 patients diagnosed with degenerative lumbar spinal stenosis (Syndrome of Blood Stasis due to Qi Deficiency) in Department of Orthopedics,Haikou Hospital Affiliated to Xiangya Medical College,Central South University from February 2017 to May 2018 were randomly divided into a control group of 59 cases and an observation group of 59 cases.Patients in the control group were given aminose mexin enteric-coated tablets combined with functional exercise,while patients in the observation group were treated with Buguheji Decoction on the basis of the treatment in control group.The clinical curative effect of the 2 groups after 1 month treatment was compared.The lumbar function,degree of lumbar pain and lumbago influence on daily life ability were observed.The hemorheology indexes was determined,and the level of TNF-α,IL-1α,MCP-1 and PCT were determined to reflect microinflammation in the body.Results:The effective rate of the control group was 74.6%,which was significantly lower than that of the treatment group of 91.5% (P<0.05).After treatment,the JOA score of lumbar vertebra function in the observation group was increased more significantly than that of the control group,while VAS and ODI scores were lower than that of the control group (P<0.05).The hemorheological indexes of the observation group were improved more significantly,such as the total blood viscosity,plasma viscosity,erythrocyte deposition and fibrinogen were lower than those of the control group (P<0.05).The microinflammatory state of the organism was ameliorated more significantly in the observation group,and the level of inflammatory mediators,such as TNF-α,IL-1α,MCP-1 and PCT were significantly reduced compared with the control group (P<0.05).Conclusion:Buguheji Decoction combined with functional exercise is beneficial to improve the function of lumbar spine,reduce the pain of lumbar spine,and improve the ability of daily life.Its effects may be realized by improving the blood microcirculation and ameliorating micro inflammatory state of the spinal canal.There is certain clinical promotion and application value.