Phlegm in the throat may be caused by fire, or it may be caused by pharyngitis. If you cure the fire and still have the appearance of phlegm, then it may be caused by pharyngitis. 1. Fire. According to the theory of Chinese medicine, excessive fire causes an internal imbalance in the body, and thus the appearance of epiglottis. When the lung fire is excessive, the patient will have blood in the phlegm, but of course there are some patients who only have simple phlegm. The upper fire can be treated with tian dong, huang lian and guo chi san for colds. A cold is an acute upper respiratory tract infection, and the symptoms of phlegm in the throat can occur. Generally speaking, a cold can heal itself in a week or so, and generally do not need too much medication, pay attention to drink more water and rest can, rely on their own immunity, cold-related symptoms will generally gradually heal in a week or so. 2. Pharyngitis. Patients will feel the presence of a foreign body in their throat along with phlegm. Some patients may feel that their throat is burning or smoldering. Some patients also experience nausea. 3. Bronchitis. Patients have a long period of coughing sputum, which can last up to three months. The patient’s sputum is usually foamy and white in color. Usually the sputum volume is higher in the morning when waking up. After catching a cold, the amount of sputum increases and the viscosity rises. If you often cough up phlegm and take self-medication to clear heat is not recommended and does not work, then it is definitely recommended to go to the hospital, maybe pharyngitis or bronchitis, and carry out targeted treatment after clarifying the cause.