Cold sore throat with yellow sputum people may be in the cold viral infection on the basis of complications caused by bacterial infection. Colds are acute upper respiratory tract infectious diseases caused by viral infections, viral replication in the mucous membrane of the upper respiratory tract, which can prompt the body to release inflammatory factors, under its stimulation, can cause inflammatory reaction of the mucous membrane of the pharynx, manifested as mucous membrane swelling, congestion, oozing, there may be an increase in secretion, pain and other symptoms. If simple viral infection, the throat secretion is white or clear color, if secondary bacterial infection, can be manifested as yellow sputum. It is recommended that people with a cold and sore throat with yellow phlegm, such as the symptoms are serious, go to the regular hospital in a timely manner, to clarify the cause of the disease, standardized treatment, so as not to delay the condition of the body to bring adverse effects.