Nasal Tongling spray is a nasal decongestant, can shrink the nasal mucosa, if long-term use may cause drug rhinitis, that is, at the beginning of the use of the ventilation effect may be very good, after using a longer period of time will become increasingly bad, after long-term contraction of the nasal mucosa, the nasal mucosa will appear mulberry-like changes, or even a poor contraction, it will cause the turbinate mucosa blocking the nasal cavity, causing further poor ventilation, and even Surgery is needed. There are also people who may have headaches when using nasal decongestants. Therefore, it is clinically recommended that nasal decongestants should not be used for more than 10 days, and the shorter the better, even short-term use may cause drug rhinitis, if not as a last resort or in cases of poor nasal ventilation, it is not recommended.