Patients’ nasal mucous membrane surface glands often secrete more plasma secretion like water, which is common in acute rhinitis or allergic rhinitis. Patients may suffer from acute rhinitis due to cold or respiratory viral infections, and will experience symptoms related to nasal congestion, more clear nasal discharge and sneezing. In addition, some patients may also suffer from allergic rhinitis due to exposure of the nasal mucosa to various allergenic substances in the air environment, which may also cause more clear watery nasal discharge. Therefore, it is important to distinguish the above two conditions, carefully examine the nasal mucosa and take targeted treatment measures.