To evaluate the effects of the qi-boosting and yin-nourishing(Yi Qi Yang Yin）treatment as an adjuvant treatment of type 2 diabetes mellitus(T2DM).Methods:By searching databases including PubMed，EMBase，CNKI and Wanfang，etc.，we gathered Randomized Controlled Trails(RCTs）associated with “Yi Qi Yang Yin” as an adjuvant treatment of T2DM.Statistical analysis was performed with STATA，ver.12.0.Results:Compared with the control group，statistical significance of the Qi-boosting and Yin-nourishing(Yi Qi Yang Yin）Treatment was found in the reduction of the levels of fasting plasma glucose(WMD=-0.84，95%CI(-0.97，-0.71)，P＝0.000)，postprandial plasma glucose(WMD=-0.73，95%CI(-1.16，-0.30)，P＝0.001）and glycatedhaemoglobinA1c(WMD=-0.17，95%CI(-0.32，-0.02)，P＝0.001）of patients in the treatment group.The levels of triglyceride(TG）and total cholesterol(TC）among studies were highly heterogeneous，on account of which we only performed descriptive analysis.Conclusion:The Qi-boosting and Yin-nourishing(Yi Qi Yang Yin）Treatment is contributive in lowering the levels of plasma glucose and HbA1c of T2DM patients.Nevertheless，due to limited methodological quality and sample size，further high-quality studies are needed for more definitive conclusions.