Cough has yellow phlegm how to do

Suggestion: need to go to the hospital to do sputum culture examination, determine the cause of cough. Cough yellow sputum is generally caused by bacterial infection, you can choose the appropriate antibiotic treatment according to the drug sensitivity test. During the treatment period, you need to drink plenty of water, can dilute sputum, promote sputum cough. Drinking water can also promote body metabolism, promote cough disappear.