The phlegm and cough are mainly caused by respiratory tract infections, which usually need to be actively treated with anti-inflammatory and anti-viral drugs, and also need to be treated with cough suppressing and phlegm dissolving drugs. It is best to go to the hospital for examination first, need to draw blood for routine blood tests, also need to take a chest X-ray examination, if necessary, can also do sputum examination. When it is caused by bacterial infection, you can take oral cefradine, amoxicillin, levofloxacin, roxithromycin or azithromycin to treat it, and you also need to use aminoglutethimide granules, acetylcysteine, serpent’s gall and Sichuan shellfish liquid, syrup of acute branch, fresh bamboo leech oral solution and other drugs to stop coughing and resolve phlegm. This time may also cause fever, if the body temperature is more than 38.5 ℃, you can take oral ibuprofen to relieve fever and analgesia, you also need to pay attention to a light diet, you can eat more fresh vegetables and fruits, is also conducive to the recovery of the disease.