Sore throat and phlegm are mostly considered as acute pharyngitis caused by acute upper respiratory tract infection, mostly viral infection, like rhinovirus, adenovirus, influenza virus can cause acute pharyngitis. At present, there are no special antiviral drugs, so symptomatic support treatment is the main focus, you can take oral detoxification and antiviral effect of Chinese medicine, which can help improve the symptoms of sore throat. You can also take oral medicine to stop cough and resolve phlegm. In the diet, you can eat more ice sugar stewed snow pear water or Chuanbei loquat paste, which have the effect of moistening lung and lowering dryness, which can achieve the effect of stopping cough and resolving phlegm. At the same time, you should pay more attention to rest, drink more water, keep indoor air circulation, diet should be light, avoid spicy and stimulating food.