Fever with cough and sputum with blood, first consider whether there are respiratory tract infectious diseases, such as pneumonia, there may be fever and bronchial mucous membrane vascular damage, resulting in hemoptysis. If there are long-term recurrent low fever with hemoptysis, we should also consider whether it is caused by tuberculosis, and tuberculosis is prone to hemoptysis. In addition, if the malignant tumor of the lung invades the artery of the bronchus, hemoptysis will also occur, and malignant tumors will also have tumor fever leading to fever. Therefore, the fever and hemoptysis should be examined by chest CT in time to clarify the cause of this condition and treat it. There is also a possibility that due to cold, fever, cough, cough, cough if too violent and too frequent, will lead to the tearing of the capillaries in the throat area, and hemoptysis occurs.