Air-purifying natural combined spice and preparation method thereof

The invention discloses an air-purifying natural combined spice, which comprises a natural spice and a traditional Chinese medicinal material, wherein the natural spice is prepared from the following components in parts by weight: 1-15 parts of costustoot, 1-17 parts of rhizoma nardostachyos and 2-19 parts of cinnamon; the traditional Chinese medicinal material comprises the following components in parts by weight: 2-8 parts of agilawood, 3-9 parts of sandalwood, 1-6 parts of clove, 2-7 parts of acronychia pedunculata, 1-5 parts of radix angelicae, 1-9 parts of star anise, and 2-10 parts of falangal. The invention further discloses a preparation method of the air-purifying natural combined spice. The method comprises the following steps: (S1) raw material proportioning; (2) sterilization; (3) drying treatment; (S4) crushing and grinding; (S5) screening; and (S6) pressing and molding. The traditional Chinese medicines with different efficacies are added to the formula and are prepared into the medicinal spice