Nasal congestion may be caused by sinusitis, allergic rhinitis, deviated septum, nasal polyps, etc. There is no quick solution, and medication or surgery should be given according to the cause. 1. sinusitis: sinus inflammation caused by mucosal congestion, edema, increased secretions leading to nasal congestion, you can apply saline nasal rinse to relieve nasal congestion, the presence of bacterial infections, can be given amoxicillin, cefixime, etc., combined with mometasone furoate nasal spray nasal spray, to relieve the local edema. 2. allergic rhinitis: allergic reaction caused by contact with allergens leads to increased nasal secretion and nasal congestion, saline rinsing of the nasal cavity can be applied to clean up nasal secretions, budesonide nasal spray nasal spray, oral cetirizine, loratadine, montelukast sodium and other drugs to improve nasal congestion. 3. Deviated nasal septum: Nasal septum is deviated to one side to block the nasal cavity and cause nasal congestion, you can consider septoplasty, nasal septum correction and other treatments. 4. Nasal polyps: Nasal congestion is caused by polyps in the nasal cavity, which can be removed under endoscopy. Nasal congestion involves many reasons, it is recommended to consult a doctor in time to find out the cause of the disease as soon as possible, all of the above medications and treatments need to be carried out under the guidance of a doctor, do not use your own medication, delay the condition.