A cranial ct showing bilateral sieve sinusitis can be treated with antibiotics as prescribed by the doctor. Sieve sinusitis is usually caused by bacterial infections such as Streptococcus pneumoniae and Streptococcus hemolyticus, and the patient may have symptoms such as nasal congestion, runny nose, and headache. After clarifying the causative organisms, appropriate antibiotics can be selected for treatment according to the drug sensitivity test. Commonly used drugs include penicillin, amoxicillin, etc. Metronidazole can be used for treatment of anaerobic infections. When bilateral sieve sinusitis appears in the cranial CT, we should carry out the relevant treatment under the guidance of the physician in time, and strictly follow the doctor’s instructions to use the drugs, so as to avoid delaying the condition. If the symptoms cannot be effectively relieved after taking medication, and the CT examination shows abnormalities in the sieve sinus structure, surgery can be used to help restore the ventilation function of the nasal cavity and improve the symptoms.