If you have yellow sputum in your throat, you may consider whether there is a bacterial infection, and you can further improve the sputum culture and take blood tests for inflammatory indexes such as routine blood test, C-reactive protein and calcitoninogen. If the above inflammatory indexes are higher than normal, it indicates a combination of bacterial infection. Based on the results of sputum culture, sensitive drugs can be selected for anti-infective treatment, and cephalosporin, penicillin or quinolones can be used orally. In addition to anti-infection treatment, you can also take oral medication to clear heat and detoxify the toxin, or cough and phlegm. Pay attention to drink more warm water, quit smoking, keep indoor air circulation, and avoid spicy and stimulating food.