1. headache: often pain in the forehead, orbit, deep part of the eye and face; 2. fever: sinusitis is accompanied by high fever in the acute stage, but not obvious in the chronic stage; 3. nasal congestion: bilateral nasal congestion often alternates, and the phenomenon of nasal congestion improves after exercise; 4. nasal discharge: when examined, the mucous membrane of the nasal cavity is congested and swollen, and the inferior turbinate is the most obvious; mucous pus or pus is most abundant at the opening of the infected sinuses; 5. loss of smell: early olfaction Acute inflammation: there may be systemic toxic symptoms, such as fever, fear of cold, loss of appetite, memory loss, general discomfort, nausea, vomiting, diarrhea, etc. if mucopurulent secretions are swallowed.