Preparation method of nasal drops

The invention relates to a preparation method of a traditional Chinese medicine preparation, and particularly discloses a preparation method of nasal drops. The method comprises the following steps: preparing houttuynia cordata, centipeda minima, glabrous sarcandra herb, commelina communis, purslane, cocklebur fruits, flos magnoliae liliflorae, rhizoma acori graminei, ephedra, borneol and other raw materials. The preparation steps include: extracting aromatic water, preparing a water decoction, concentrating the water decoction, centrifugally separating the water decoction, preparing a nasal drop water extraction liquid medicine, preparing the nasal drops and the like. The nasal drops prepared by the method have a remarkable curative effect, can obviously improve the edema condition of nasal sinus mucosa of the nasal cavity, recover nasal ventilation, improve nasal drainage, reduce nasal secretion and relieve inflammatory reaction, and avoid causing side effects such as drug-induced rhinitis, nasal dryness an