The invention relates to a preparation method of pure natural plant health care aroma. The pure natural plant health care aroma is characterized by being prepared from 1000g of folium artemisiae argyi, 1000g of mint leaves, 1000g of agastache rugosus peduncle, 1000g of sweet wormwood herb, 1000g of rhizoma acori graminei, 1000g of frost rhizoma atractylodis, 1000g of lemonfragrantangelica root, 500g of clove, 500g of sesame, 1700g of peach tree leaves, 500g of eucalyptus leaves, 1000g of isatidis root and 1000g of herba eupatorii. The preparation method of the pure natural plant health care aroma comprises the following steps of: grinding dry Chinese herbal medicine into fine powder, sieving by virtue of an 80-mesh sieve, and continuously grinding powder which can not pass through the 80-mesh sieve and then sieving for spare use; and according to weight proportion, adding water into 70-90% of Chinese herbal medicine fine powder and 10-30% of white paste powder, stirring to form a brown dough, placing the brown dough into an extruding machine, extruding a strip-shaped coil so as to form tower-shaped aroma, and drying in the sun and then packaging. According to the technical scheme, the pure natural plant health care aroma is prepared by adopting pure natural Chinese herbal medicines, has the effects of inhibiting virus, killing pathogenic bacteria, expelling and killing insect pests, clearing damp and deodorizing, produces no toxic or side effect and has an environment-friendly effect.