Fungal sinusitis is categorized into invasive fungal sinusitis and non-invasive fungal sinusitis, under which there are different types of fungal sinusitis with different symptoms for each type. 1. Non-invasive fungal sinusitis is divided into fungal ball and allergic fungal sinusitis. (1) Fungus ball: its symptoms are manifested as unilateral nasal congestion, pus flow, and foul odor. If the fungus ball is large there will be lumps and pain in the face. (2) Allergic fungal sinusitis: its symptoms are a maxillofacial bulge, which is painless, irregular and hard. If the bulge increases in size it can compress the eye orbits, resulting in protruding eyeballs and limited eye movement. In severe cases, swelling of the periorbital tissues occurs. 2. Invasive fungal sinusitis is divided into acute invasive fungal sinusitis and chronic invasive fungal sinusitis, which have different symptoms. (1) Acute invasive fungal sinusitis: its symptoms are fever, periorbital and cheek swelling, protruding eyeballs, vision loss, severe headache and so on. Untimely diagnosis and treatment can lead to death. (2) Chronic invasive fungal sinusitis: intermittent bloody and pus-filled mucus, which may be accompanied by headache, eye swelling or vision loss and other manifestations of invasion of peripheral organs and tissues, with an insidious onset and a slow progression of the disease, the course of which may last for several years. If the above symptoms occur, it is recommended to consult a doctor in time, after diagnosis and treatment.