Coughing and sputum in 7-month-olds is usually caused by acute upper respiratory tract infections, and the common clinical treatments include medication and general therapy. Upper respiratory tract infection is a relatively common disease, usually due to rhinovirus, adenovirus, influenza virus and hemolytic streptococcus and other infections. For upper respiratory tract infections caused by cough and phlegm symptoms commonly used clinical treatment drugs are compound licorice tablets, acetylcysteine, etc. If the baby has a fever, you can give ibuprofen, acetaminophen and other antipyretic and analgesic drugs, if accompanied by bacterial infections, you can give antibiotics such as penicillin. Viral infections are generally treated with supportive therapy, while severe viral infections can be treated with antiviral therapy under the guidance of a doctor. In addition, babies also need general treatment, including bed rest, drinking plenty of water and ensuring indoor ventilation. If your baby develops coughing and sputum, we recommend that you consult a pediatrician as soon as possible for a definitive diagnosis, and then follow the doctor’s instructions for standardized treatment to ensure a good prognosis for your baby. All of the above medications should be used under the guidance of a doctor.