Colds belong to the acute upper respiratory tract infectious diseases, the cold is well but dyspnea is always coughing may be due to pneumonia, asthma, pleurisy and other conditions. 1. Pneumonia: It is usually caused by pathogens invading the lung parenchyma, and is mostly considered to be related to factors such as age, smoking, and impaired immune function. As pneumonia can progress from colds, patients often have a history of upper respiratory tract infections, and often experience symptoms such as coughing and sputum, and in some cases, shortness of breath and dyspnea. 2. Asthma: usually due to genetic and environmental factors, can be triggered by respiratory tract infections, the patient will appear wheezing, shortness of breath, chest tightness or coughing and other symptoms, the condition of serious cases can also be manifested as dyspnea, hypoxemia. Therefore, there may be a phenomenon that the cold is over but the dyspnea is always coughing. 3. Pleurisy: while colds cause pneumonia, if the lesion area is large and involves the pleura, it will lead to pleurisy. Pleurisy will cause irritating cough, accompanied by chest pain, if a large amount of pleural effusion can compress the lung tissue, resulting in dyspnea. Therefore, the phenomenon of coughing with dyspnea may occur when the cold is over. Coughing after a cold, but dyspnea can also be caused by other diseases, it is recommended that the patient consult a doctor in a timely manner to determine the cause of the disease and standardize the treatment under the guidance of the doctor, so as not to delay the condition.