A cough with phlegm is not a phenomenon that is almost over. A cough with phlegm indicates that the disease is prolonged or severe, such as in patients with bronchitis or pneumonia, which is usually a cough with phlegm. When coughing with phlegm, it means that inflammation occurs in the mucous membrane of the respiratory tract due to congestion and edema. The most common inflammation is infection by pathogens, such as bacteria, viruses, and mycoplasma. If coughing with phlegm occurs at a later stage of the disease and the phlegm can be discharged smoothly, it means that the disease is transforming for the better and the phlegm can be discharged smoothly, indicating that the inflammation in the body is gradually disappearing. When you have a cough with phlegm, you must pay attention to the top of your diet and do not eat raw, cold, hard, spicy, greasy and stimulating foods, especially sweet foods, such as cream and cakes, etc. Since sweet foods can produce phlegm, they are not conducive to the improvement of cough with phlegm. Acute respiratory tract infections can also cause coughing with phlegm and need to be treated promptly for better healing.