Feeling phlegm blocked in the chest is mainly considered to be caused by inflammation of the respiratory tract. If the symptoms are not very serious, you can start with diet, drink more water, eat more fresh vegetables and fruits, such as snow pear and loquat, which can play a supplementary role in resolving phlegm, and try to avoid eating greasy, too sweet, spicy and stimulating food. When the symptoms are more serious, it is recommended to improve chest CT, bronchoscopy and other related examinations to clarify the cause (such as: infection, foreign body, lung or bronchial tumor, etc.), and carry out diagnosis and treatment for the cause, and pay attention to proper activities to promote the discharge of phlegm in general.