Abstract:The dried jujube and day lily packed with plastic film were irrad(?)- ated with ~(60)Co gamma rays,and the adequate dosage was 1 kGy.The in- sects in the jujube and day lily,such as Lepidoptera and Elytrum were ef- fectively killed by irradiation.After one-year preservation,more than 90% of the irradiated jujube and day lily are still all right.The main nu- trients of the irradiated jujube and day lily,such as sugar,amino acid, vitamins and inorganic salts,did not change evidently.The irradiated ju- jube and day lily appear to be harmless for human consumption,because of the low dosage of irradiation.