In case of nasal blockage, first of all, it is necessary to determine whether the blockage is bilateral interstitial or alternating nasal congestion or persistent nasal congestion, if it is alternating nasal congestion, it may be simple rhinitis, if it is persistent nasal congestion, it may be hypertrophic rhinitis or other causes such as deviated septum. It is also necessary to determine whether the nasal congestion has pus nasal discharge, and if there is pus nasal discharge, it should be considered that there may be symptoms of sinusitis at the same time. If there is severe nasal congestion, it is important to determine the condition of the sense of smell and to have a clear understanding of the medical history. Then, based on the medical history, sinus CT examination can be done to observe the structural condition of the nasal cavity, the nasal septum, the lateral wall of the nasal cavity and the condition of the sinuses, and then assessed on a case-by-case basis. Generally, some drugs are available, such as nasal drops and sprays, combined with glucocorticoid vasoconstrictor drugs, and for comprehensive areas, surgical disposition can be performed. If polyps and other tissues are found, surgical removal is performed.