The fact that the nose turns yellow indicates that there is an inflammatory infection, which is not a sign of getting better but a sign of aggravation. This is usually seen in acute rhinitis or acute sinusitis, which are symptoms caused by the invasion of bacteria and viruses after the body’s immunity and resistance are reduced. Acute rhinitis causes bilateral nasal congestion, persistent edema and congestion of the turbinates, and a large amount of yellow discharge from the nasal cavity, which requires symptomatic anti-inflammatory treatment and can be cured in about a week with oral anti-inflammatory drugs. In sinusitis, yellow nasal discharge is caused by congestion, edema and inflammatory exudation of the mucous membrane of the sinuses, and patients will experience facial swelling and pain, headache and yellow nasal discharge. In addition to symptomatic anti-inflammatory treatment, sinus puncture and irrigation are required in the treatment, which can be cured in about once a week and half a month. In case of chronic recurrent sinusitis, surgical treatment is required for complete cure.