The invention discloses a breviscapin-containing
oral cavity spraying agent, which is mainly prepared from the following components in percentage by
mass: 5 to 10 percent of breviscapin, 3 to 6 percent of cosolvent, 0.1 to 1.5 percent of sorbefacient, 0.1 to 0.3 percent of
preservative, 0.02 to 0.08 percent of flavoring agent and the balance of
purified water. A preparation method of the
oral cavity spraying agent comprises the following steps of: crushing the breviscapin, adding
ethanol, heating for refluxing, and filtering and concentrating; after heating, regulating the pH value, standing, filtering, regulating the pH value of filter liquor, standing and performing suction
filtration; precipitating with
ethanol and washing with the water; adding
methanol and
active carbon, heating, filtering, concentrating the filter liquor, crystallizing, and washing and
drying to obtain a coarse product; regulating the pH value of the coarse product, heating, centrifuging, allowing the filter liquor to pass through resin, eluting, concentrating the filter liquor under reduced pressure, performing suction
filtration, regulating the pH value, standing and performing suction
filtration to obtain precipitates, and washing and
drying to obtain the breviscapin; and dissolving the breviscapin in the components, stirring uniformly, and filtering to obtain the spraying agent. The
oral cavity spraying agent has quick response, high
bioavailability and good effect of treating cardiovascular and cerebrovascular diseases, and is convenient to carry.