Abstract:The Allium mongolicum Regel（AM）was used as raw material and extracted by pure water，and the total flavonoid content（TFC）was quantified.The antioxidant capacity of the aqueous extract was evaluated by testing the scavenging activity on 1，1-diphenyl-2-picrylhydrazyl radical（DPPH·）.Furthermore，inhibitory effects against α-glucosidase and pancreatic lipase in vitro of AM aqueous extract were assessed.Results showed that the TFC of AM was 4.02 mg QE/g DW and could scavenge DPPH radical effectively with IC50of 0.867 mg/mL，the Trolox equivalent antioxidant capacity of DPPH assay was 51.82 mg Trolox/g DW.It also showed inhibitory activity against α-glucosidase and pancreatic lipase with IC50were 326.29 mg/mL and 179.48 mg/mL respectively，and both exhibited in a concentration manner.In summary，the flavonoid-rich AM had strong antioxidant potential and well inhibitory effects against α-glucosidase and pancreatic lipase，which deserves further research and development.