Coughing up sputum, sputum a little yellow may be due to acute upper respiratory tract infection, pneumonia, bronchial dilatation, sinusitis and other diseases, need to address the cause of treatment. 1. Acute upper respiratory tract infection: mainly manifested as nasal congestion, runny nose, cough, cough sputum, sore throat and other symptoms. If the acute upper respiratory tract infection caused by bacterial infection, sputum can be yellow. Treatment can use amoxicillin and other antibiotic treatment, at the same time can use aminoglutethimide and other cough phlegm. 2. Pneumonia: coughing sputum, sputum is yellow, if accompanied by fever, chest pain and other symptoms, considering that it may be a bacterial infection caused by pneumonia, you can use antibiotic treatment, such as cephradine, cefazolin and other drugs. At the same time, you also need to take cough and phlegm drugs, such as ambroxol, compound licorice oral solution. 3. Bronchial dilatation: mainly manifested as chronic cough, coughing up sputum, coughing up pus sputum, hemoptysis and other symptoms. Treatment can use the third generation of cephalosporins such as ceftriaxone sodium, cefotaxime, moxifloxacin and other anti-infective treatment. At the same time, you can use aminobromine hydrochloride to resolve phlegm, tiotropium bromide to improve airflow limitation and other drugs for treatment. 4. Sinusitis: Sinusitis will secrete purulent nasal mucus, excessive nasal secretion or sleep at night, the nasal mucus will flow back into the pharynx causing coughing, coughing yellow phlegm. Treatment can use amoxicillin and other antibiotics, but also can use 1% ephedrine saline drops, if necessary, can be sinus puncture rinse. Coughing up sputum, sputum a little yellow can also be caused by a variety of other diseases, it is recommended to go to the hospital in a timely manner, to clarify the cause of the disease, according to the doctor’s guidance for standardized treatment.