Banana Icing is rich in protein, vitamins, etc. Cough is a respiratory symptom, usually associated with infections, allergies, respiratory diseases, etc., and requires clinical symptomatic treatment. There is no clinical information to prove that banana rock candy can help relieve cough and resolve phlegm. Banana rock candy is just a nutrient-rich food with no medicinal value. When treating a cough, the first thing you need to know is the cause of the cough. Treat the primary cause of the cough and choose the appropriate cough suppressant and expectorant. If bacterial infection caused by cough, you can use drugs, such as levofloxacin, penicillin, streptomycin and so on. If the phlegm is not easy to cough out, you can use drugs to dissolve phlegm, such as Ambroxol. If you have a cough with phlegm, you need to see a doctor as soon as possible to avoid delays.