Bacterial and mycobacterial sinusitis can be judged by clinical symptoms, pathogenetic examination, imaging examination and other methods. 1. Clinical symptoms: can be judged by observing the character of nasal secretion, mycobacterial sinusitis can appear tofu scum-like secretion, and accompanied by fishy smell; bacterial sinusitis is mostly purulent secretion. 2. Pathogenetic examination: Sinusitis secretion examination, bacterial culture and fungal culture, the emergence of mold for mycotic sinusitis, the emergence of bacteria for bacterial sinusitis. 3. Imaging examination: mycotic sinusitis through the CT imaging examination, manifested as uneven density in the sinus cavity mass-like high-density shadow; bacterial sinusitis is mostly manifested as a soft tissue density shadow in the sinus cavity, the density is relatively low. After the appearance of sinusitis, you need to go to the hospital for relevant examinations, identify the cause of the disease, and follow the doctor’s instructions for targeted treatment.