The causes of cough and fever may be bacterial infection or viral infection. 1. Colds: mainly caused by viral infections, which may result in cough, phlegm, fever and other symptoms. Common cold does not require antiviral treatment, while influenza requires the use of antiviral drugs such as oseltamivir. 2. Pneumonia: Pneumonia is mainly caused by bacterial infections. Cold and rain can reduce the body’s immunity and lead to lung infections, causing fever, cough and sputum. Anti-infection treatment can be given, such as amoxicillin, cefixime and other antibiotics anti-infection treatment. 3. Chronic Obstructive Pulmonary Disease (COPD): Usually there are symptoms such as chronic cough and sputum, and if bacterial infection occurs, then fever will occur, and at the same time aggravate the symptoms of cough and sputum, and antibiotics such as levofloxacin and other anti-infective treatments should be given actively. 4. Tuberculosis: mainly due to Mycobacterium tuberculosis infection, the main manifestations of low fever, cough, cough sputum, sputum with blood and other symptoms. Anti-tuberculosis treatment, such as isoniazid, rifampicin and so on, should be given. There are many other diseases that cause cough and fever, such as cough and fever, you need to actively consult the doctor, follow the doctor’s instructions for reasonable treatment, the drugs need to be rationally applied under the guidance of the physician, do not self-medication.