The invention relates to application of chenopodium vulvaria volatile oil to bacteriostatic/bactericidal and antioxidative products. The chenopodium vulvaria volatile oil can be obtained by a water steam distillation or CO2 supercritical extraction method, and main ingredients of the chenopodium vulvaria volatile oil are identified by gas chromatograph/mass spectrum. The chenopodium vulvaria volatile oil has an obvious effect of killing or inhibiting bacteria such as staphylococcus, streptococcus, enterobacter, salmonella, shigella, pseudomonas, bacillus, escherichia coli and the like and fungi such as candida, cryptococcus, penicillin, aspergillus, mucor, microsporon, trichophyta, epidermophyton and the like. A diphenyl picryl phenylhydrazine (DPPH) method proves that the chenopodium vulvaria volatile oil has the high antioxidant activity, can be widely applied to industry of food, medicines, cosmetics, health-care products and the like, and is used for preparing the bacteriostatic/bactericidal and antioxidative products.