Yellow phlegm in the throat can be interpreted as fire in Chinese medicine, while from a Western medical perspective, it is believed that bacteria cause inflammation in the throat, which in turn causes congestion, edema and secretion of inflammatory secretions. Inflammatory cells in the body gather in the throat and engulf or fight with foreign bacteria, and these cells undergo lysis and necrosis and also secretion. These cells and secretions are mixed together to form yellow sputum. It is mainly due to bacterial infections, so taking antibiotic treatment is of utmost importance. For upper respiratory tract infections, you can take azithromycin, cefaclor, clarithromycin for treatment; you can also take Pudilan Anti-inflammatory Oral Liquid, Lung Power Cough Combination, and Fresh Bamboo Liqueur for treatment at the same time.