Bilateral increased density in the sieve sinus is considered to be a possible bacterial infection, hemorrhagic lesion, etc. The diagnosis needs to be further clarified based on the history. 1. Bacterial infection: is the most common factor for increased density in the sieve sinuses and can be detected on imaging. When reading the film, it is found that the inflammation is not heavy and there is no nasal discomfort, there can be no special treatment. If there is heavy inflammation and pus flow, headache, nasal congestion, etc., can use amoxicillin, tretinoin nasal spray and other medications, standardized treatment of the throat effect is not good can be surgical symptomatic treatment. 2. Bleeding lesions: If there is a clear history of trauma, and no nasal discomfort on weekdays, or repeated bleeding in the nose, consider the possibility that increased density of the sieve sinus is a large accumulation of blood. When the density shadow is not serious, no special treatment is usually needed. If there is repeated bleeding, it may be necessary to give hemostatic drugs, such as vitamin K1, phenol sulfonyl ethylamine and other drugs symptomatic treatment. Drugs must be applied under medical supervision. Therefore, when sieve sinus discomfort occurs, it is recommended to consult a regular hospital for a clear diagnosis and targeted treatment.