t. In Vietnam, Allium Tuberosum Rottler. ex Spreng (ATRES) was used in everyday meals as a seasoning, and as a common remedy for the prevention of diarrhea, asthma, and so on. In this study, We evaluated the phytochemical composition, total phenolic content (TPC), total flavonoid content (TFC) and antioxidant activity of ATRES, which was harverted in Vietnam. The findings indicate that Vietnamese ATRES had a varied range of pharmacologically active compounds, including alkaloid, flavonoid, terpenoid, tannin, coumarin, saponin, and reduced sugar. Folin-Ciocalteu calculates the TPC and the TFC is derived using the aluminum chloride method. The TPC and TFC of ethanol extract in ATRES achieved 46.15 ± 1.26 mgGAE/g DW and 31.10 ± 1.12 mg QE/g DW, respectively. Taken together, we found that the antioxidant capacity in DPPH forms (2, 2-diphenyl-1-picrylhydrazyl) was assessed by spectrophotometric method and obtained an IC50 result of 97.46 µg/ml. These results indicate that Vietnamese ATRES is effective in increasing food use with its antioxidant and valuable activity.