Compound menthol nasal drops is an oil-based nasal drops, which clinically has the function of moisturizing nasal cavity and protecting nasal mucosa. It is widely used clinically for dry rhinitis, atrophic rhinitis, allergic rhinitis induced nasal mucosal erosion, chronic sinusitis, nasal septum erosion induced by rhinitis, rhinitis, post-operative nasal septum, post-sinusitis and other related applications. For patients with atrophic rhinitis, long-term use of compound peppermint brain nasal drops can stimulate the regenerative function of nasal mucosa cells. The compound menthol nasal drops is clinically mainly composed of liquid paraffin oil, etc. The main clinical components include equal quality of menthol and camphor, and its solvent is liquid paraffin oil, which as the name suggests has the function of lubricating the nasal cavity. This drug is clinically very wide, belongs to the external use of drugs, individual patients after dropping may have a slight allergic performance of the nasal cavity, but the possibility is very small, the patient drops the nose when the best head back, do not drop too much at a time, a nostril drops 1-2 drops can be, drops more easily into the lungs, and over time, easy to choke and cough.