The invention relates to a Flos Magnoliae volatile oil nasal spray, belonging to the Chinese traditional medicine preparation field. The nasal spray is prepared by the following raw material medicines and auxiliary materials in volume portion: 40 to 60ml of Flos Magnoliae volatile oil, 40 to 60ml of polysorbate 80 and 20 to 32ml of glycerin. The preparation method comprises the following steps that: the polysorbate 80 and the glycerin in the formula are taken and added with 100 to 500ml of absolute ethyl alcohol and stirred so as to dissolve the polysorbate 80 and the glycerin in the absoluteethyl alcohol; under the stirring at a rotary speed of between 900 and 1,100r/min, the mixed solution is slowly added with the Flos Magnoliae volatile oil and stirred for 10 minutes at a rotary speedof between 900 and 1,100r/min; and the mixed solution is added with distilled water until the constant volume is 1,000ml, and is filtered through a micro-hole filter membrane with a hole diameter of 0.22mu m. The nasal spray of the invention has the effects of dispelling chill, removing nasal obstruction and resisting allergy; moreover, the nasal spray is used to treat acute and chronic rhinitis,allergic rhinitis, sinusitis, nasal obstruction, nasosinusitis and nasal discharge. The nasal spray is used to spray four times once, twice a day.