From the point of view of western medicine, bubbles in sputum may be seen in viral infection, or mycoplasma or chlamydia infection, etc., causing cough with a little foam in the sputum. If the cough is caused by a viral infection, antiviral treatment can be given, or traditional Chinese medicine can be used to treat the symptoms. If the cough is caused by pathogenic microorganisms such as mycoplasma and chlamydia, antibiotics of macrolides, such as azithromycin, erythromycin, and erythromycin, can be given. If it is an adult older than 18 years old, quinolone antibiotics can be given for anti-infective treatment, such as moxifloxacin and levofloxacin mesylate. The bubbles in the sputum from the Chinese medicine point of view is mostly seen in the wind-cold against the lungs or wind-cold with drink against the lungs caused by cough, if it is wind-cold against the lungs caused by cough, can be given San’ao tablets and stop coughing powder plus subtraction, the evacuation of wind-cold, promote the lungs to stop coughing for the treatment. If the cough is caused by wind-cold and drink, you can give Xiao Qinglong Combination to warm the lungs and dissolve the drink, promote the lungs and relieve cough.