Coughing is the most common symptom of respiratory tract infection. After coughing up blood, you should go to the hospital for relevant examinations to find out the cause of the disease and follow medical advice for Chinese and Western medicine, such as taking appropriate anti-inflammatory and hemostatic drugs. Coughing is a protective reflex of the human body, and the body expels foreign bodies from the airways by coughing, etc. Patients with tuberculosis may cough up blood. Coughing itself can also cause blood vessels in the bronchial mucosa to rupture and bleed, and patients with severe pharyngitis may also have a cough with blood in the sputum. Coughing up blood can be caused by a variety of reasons, such as pharyngitis, pneumonia, tuberculosis, bronchiectasis, and lung cancer. If a patient has a cough and coughs blood, it is recommended that he or she go to the hospital for blood tests and a CT of the chest, and the doctor will confirm the cause of the coughing blood based on the results of the tests. After the diagnosis is made and the cause of coughing up blood is determined, the patient can follow the doctor’s prescription for treatment with Western and Chinese medicine. In daily life, patients are advised to eat a light diet, not to eat spicy and stimulating foods, and to eat more fresh vegetables and fruits. In conclusion, if coughing up blood, it is recommended to go to the hospital for examination to find out the cause of coughing up blood and treat it according to the cause. At the same time, the patient can also follow the doctor’s advice to take appropriate drugs to stop the bleeding. Pay attention to increasing nutrition, exercising and eating lightly to improve their resistance, which is beneficial to the recovery of the disease.