Blood in sputum is commonly associated with pneumonia, tuberculosis, and tumor occupancy in the lungs. Blood tests, blood sedimentation, C-reactive protein, and chest X-rays can be performed by blood and image analysis. Pneumonia caused by viral infections can be treated symptomatically with antiviral drugs, such as ribavirin. Pneumonia caused by bacterial infection can be treated symptomatically with antibiotic medications. If there are symptoms of hot flashes, coughing blood and coughing, and the body is obviously thinning, the possibility of tuberculosis is considered, and further examination is recommended. Patients who are clearly diagnosed with tuberculosis are recommended to go to a regular specialized hospital. Patients with blood in sputum from lung cancer after examination have been clearly identified, mostly because the tumor invades the small blood vessels of bronchial mucosa, coughing produces vibration, the small blood vessels rupture and blood in sputum appears. If the amount of coughing blood is relatively large, the cause needs to be analyzed for symptomatic treatment, including hemostasis, blood replenishment, and vascular embolization treatment under intervention, etc. Patients who have such symptoms should actively cooperate with the doctor to avoid aggravation of the disease.