Feeling phlegm and coughing in the throat is mainly considered to be caused by local inflammatory stimulation of the throat, which can cause local congestion and edema, resulting in increased secretion and the formation of phlegm, which can stimulate local coughing symptoms. Generally, it can be actively treated with drugs to stop cough and resolve phlegm and drugs to clear heat and remove fire. You can take Jin Yin Hua granules and Shuang Huang Lian oral liquid by mouth, or you can use drugs such as Ambroxol and Snake Bile and Chuan Bei liquid. If the sputum is yellow and sticky, it needs to be treated actively with antibacterial drugs, penicillin or cephalosporin can be preferred. 18 years old and above can also be treated with quinolones, more commonly used are levofloxacin and ciprofloxacin, usually need to eat more fresh vegetables and fruits, drink more water, try to avoid eating irritating food to the throat and airway. Avoid eating foods that are irritating to the throat and airways.