Cinnamomum camphora is an evergreen tree in plant form, and the whole plant has fragrance. The bark is yellowish brown with irregular longitudinal cracks. Leaves alternate, thin leathery, oval, 6 ~ 12 cm long and 3 ~ 6 cm wide, grayish green below, with three veins at the base, and obvious glands in the axils. Panicle axillary; Tepals 6, yellow-green, with short hairs inside; Fertile stamens 9, anthers 4-loculed, anthers of the third leaf outward, valved; The ovary is superior. Berry is spherical, purple-black, and receptacle is cup-shaped. The flowering period is from May to June, and the fruiting period is10 ~165438+1October. Born on hillsides and streams; Cultivate more. Location: south and southwest of the Yangtze River. Cut down trees in winter, chop or saw them into pieces, and dry them in the sun or air. The carving features of camphor wood blocks vary in size, and the surface is reddish brown to dark brown, and the annual rings can be seen on the cross section. Heavy and hard. It has a strong smell of camphor, and it tastes cool and spicy. The chemical composition contains volatile oil, and the main components in the volatile oil are d- camphor, cineole, safrole, borneol, d- pinene, camphene and phellandrene. Sexual taste is peaceful and pungent. Functions mainly include expelling wind and removing dampness, dredging channels and collaterals, relieving pain and promoting digestion. Used for rheumatic joint pain, chills, cholera, abdominal distension, insomnia and traumatic injury. Camphor injection is a granular crystal distilled from the roots, stems, branches and leaves of Cinnamomum camphora. Warm in nature and pungent in taste; It can clear the orifices, remove filth, warm the middle warmer, relieve pain, promote diuresis and kill insects. It is estimated that none of the people who spread these rumors are from China.

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