Nasal congestion, yellow nasal discharge and cough suggest that the patient may have a common cold, in which 70%-80% is caused by viral infection. The clinical symptoms are mainly nasopharyngeal catarrh. Patients can have nasal congestion, runny nose, sneezing, dry throat, itchy throat, sore throat, cough, postnasal drip flu, some patients can have fever and headache symptoms, taste can become dull, breathless, hoarse voice and other symptoms. In the treatment, the patient should drink more warm water and rest, and can use Chinese medicine with the effect of clearing heat and detoxifying the toxin, such as cold and fever clearing granules, Lianhua Qingfei capsule, and western medicine can choose ribavirin or oseltamivir and other antiviral drugs for treatment, mainly for patients with low immunity of the body, as well as the old and weak. In case of bacterial infection, usually the white blood cell count in the blood routine will be significantly increased, and anti-inflammatory drugs such as cephalosporin or penicillin should be used in the treatment.