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Chrysanthemum is a traditional flower, wildly used for cut, potted and ornamental landscaped, besides its unique smell, high nutrition, it can also make food and drink. In this paper, selenium-enriched chrysanthemum was studied on, with common chrysanthemum as control. According to the quantify of selenium content in them, high selenium-enriched, average selenium-enriched and low selenium-enriched chrysanthemum were sorted. The safity of Se-enrich was evalued and anti-oxidation of extraction was determined.Used foliar application of sodium selenite method, low se-enriched chrysanthemum(0.24 mg/kg), average se-enriched chrysanthemum (0.74 mg/kg), and high se-enriched chrysanthemum (1.02 mg/kg)were producted. In the range of 0-60 ha-1 selenium, the content in se-enriched chrysanthemum enhance by foliar application increased, and linear.Selenium can inhibit chrysanthemum from enriching heavy metals. With the increasing concentration of selenium spraying, Zn, Fe, Cu, Mn were deeply declined, what proved selenium benefit for health.Seventeen factors which could threaten the quality and safety of se-enriched chrysanthemum were analysised, and fifteen factors below the limilment, eight factors were not be analysised. Carbendazim, phorate, omethoate, methyl-thiophanate, phoxim, DDT, bromine cyanide permethrin, cypermethrin were detected, which may be related to the environment of chrysanthemum growth.The content of Se in chrysanthemum related to spraying in leaives, until it reached 1 ppm, GC-MS can detect se-Met, that is proved se could transformed se-protein efficient.Anti-oxidant activity were analysised in DPPH, linoleic acid system and reducing power with se-enriched chrysanthemum and common chrysanthemum. Anti-oxidant activity of common chrysanthemum was higher than that of se-enriched chrysanthemum, Anti-oxidant activity of alcohol extraction was higher than that of water extraction were showed.
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