NOVELTY - Preparation of medicine bag comprises collecting Cedrela sinensis tree leaves, airing, picking camphor, non-leguminous crop, rhizoma atractylodis, and Litsea cubeba fruit, drying, reducing water content, collecting citrus, Chenopodiaceae plant stem and leaves, removing branch, drying; drying traditional Chinese medicinal materials, crushing into powder, sieving; sewing environment-friendly cylinder bag, uniformly mixing raw materials to obtain filling material, packaging into bag, putting outer rubber shrink film, sealing and shrinking.    USE - Method for preparing medicine bag used for storing grain, 50-100 g small melon, bean (claimed), vegetable, dried fruit, bran, and feed, and preventing and killing stored grain pests.    ADVANTAGE - The bag is environment-friendly, sanitary, and convenient to use.    DETAILED DESCRIPTION - Preparation of medicine bag comprises collecting 35-45 days leaves of Cedrela sinensis tree, airing in cool ventilated place to a water content of 12-15%, picking camphor, non-leguminous crop, rhizoma atractylodis, and Litsea cubeba fruit, drying to brown-black, reducing water content to 10-12%, collecting citrus, and Chenopodiaceae plant stem and leaves, removing branch, drying in ventilated place to a water content of 12-15%; drying traditional Chinese medicinal materials into 8% water content, crushing into powder, sieving through 30 mesh sieve; making environment-friendly bag using brown non-woven cloth, cutting and sewing into a long cylinder bag; taking 35-40 pts. wt. jerusalem artichoke powder, 35-40 pts. wt. Cnidium powder, 20-25 pts. wt. Chinese mosla powder, 25-30 pts. wt. Cedrela sinensis leaves powder, 30-35 pts. wt. Litsea cubeba powder, 20-25 pts. wt. rhizoma cyperi powder, 25-30 pts. wt. herba schizonepetae powder, 25-30 pts. wt. pepper powder, and 0.2-1 pt. wt. feed mildew preventive sodium propionate; uniformly mixing jerusalem artichoke powder, Cnidium powder, Chinese mosla powder, and pepper powder, adding sodium propionate, fully stirring, adding Cedrela sinensis leaves powder, Litsea cubeba powder, incense powder, and herba schizonepetae powder, uniformly mixing to obtain filling material, putting into hopper, packaging into long cylinder bag; sewing bag, putting outer rubber shrink film, sealing, and heat shrinking using infrared.