Coughing up phlegm with phlegm is not possible because one is not coughing up phlegm in the right way, and the other is that phlegm is sticky and not easy to cough up, so you need to choose the right coughing action. It is also necessary to drink more water and to use phlegm-eliminating drugs to make the phlegm thinner. The correct way to cough up sputum is to lean forward and bend the body, inhale into the abdomen before coughing, and cough with force from the abdominal muscles, so that the sputum can be coughed out more easily with a low and deep sound. Use your hand to form a hollow on your back and tap it slightly from the bottom to the top to help cough up the phlegm. Avoid spicy and irritating food and sweet food, drink less water and not enough sputum will be dry and sticky, and sweet food can also lead to sticky sputum. Focus on a light diet, you can eat more vegetables and fruits rich in vitamins. Also avoid smoking and alcohol. Cigarettes can lead to atrophy of airway cilia, and the oscillation of airway cilia can discharge phlegm from the lungs into the mouth. Targeted medication can achieve the effect of resolving phlegm and relieving cough, such as Ambroxol oral liquid and Chuanbei loquat cream, which can dilute phlegm and also have the effect of relieving cough; you can also choose nebulized inhalation, and some phlegm-reducing drugs have nebulized preparations that can be used, or you can add bronchodilators. When coughing phlegm is not easy to cough up, you need to eat lightly, drink more water, avoid smoking and alcohol, choose the correct way to cough up phlegm, and use phlegm-reducing drugs together.