Cold cough sputum is yellow, generally this situation shows that the lung heat comes faster, most of these colds are wind-heat colds, or directly is the temperature of the disease, spring temperature or winter temperature, will quickly appear cough cough yellow sputum situation. This is a reminder that the internal heat is too heavy, yellow phlegm is usually discharged from the trachea, the lungs, heat evil into the internal organs, in the case of warm disease, that is, from the Wei points into the qi points, deeper into the first level. In this case, we must actively clear the heat, if not clear the heat at this time, the subsequent heat and poison up, further to enter the camp blood, causing more serious lesions. So if you find a cough sputum is yellow when you have a cold, this time do not freeze carry or just take some medicine, try to go to the hospital to see, to prevent some more serious consequences.