Nasal pass nasal drops is a proprietary Chinese medicine preparation, most of the side effects of proprietary Chinese medicine preparations are not clear, nasal pass nasal drops because it can smooth the nasal cavity, considering the presence of components in proprietary Chinese medicine with the effect of shrinking the nasal mucosa and nasal turbinates, equivalent to the nasal mucosa decongestant in Western medicine, the long-term use of nasal mucosa decongestant in Western medicine can lead to chronic toxic reactions in the nasal mucosa, which can cause destruction of nasal mucosa epithelial cells, cilia loss, glandular hyperplasia and dilation of glandular ducts. As a result of long-term constriction of the nasal mucosal vessels, it can cause hypoxia in the vessel wall, resulting in rebound vasodilatation and insensitivity to the effects of vasoconstrictors, which instead makes the symptoms more and more severe and causes drug rhinitis. Although the side effects of nasal drops are not clear, but not long-term use, it is recommended that after a week of medication, suspend for two days, according to the nasal congestion again briefly use the drug.