If the phlegm is caused by smoking, you need to quit smoking, drink more water and eat a light diet. For those whose sputum is sticky and not easy to cough up, it is necessary to exclude whether there is a combination of bronchitis, pneumonia, chronic obstructive pulmonary disease, etc. After clarifying the bacterial infection, it can be given to penicillin and other anti-infective treatments, and aminobromine, acetylcysteine and other cough and phlegm treatment. 1. Anti-infection, if combined with bronchitis, pneumonia, acute exacerbation of chronic bronchitis, etc., when there is a clear indication of bacterial infection, need to use antibiotics such as penicillin, ceftriaxone, ofloxacin and so on to carry out treatment. 2. Ambroxol, commonly used in clinical practice to dissolve phlegm, can dissolve phlegm for phlegmatic cough, so as to alleviate the symptoms of cough. 3. Acetylcysteine, commonly used in clinical effervescent tablets, can dissolve mucus phlegm in the lungs and help deep phlegm to be coughed out smoothly. Smoking is harmful to your health, so it is recommended to quit smoking in time. When sputum is thick and sticky and cannot be improved, it is recommended to consult a doctor in time, improve the blood routine, lung function test, chest CT, etc., and also need to exclude lung fibrosis, lung cancer and other diseases. The above medications should be used under the guidance of a physician.