Once there is blood in sputum, examination comes first, and of course its treatment depends on the amount of blood. Blood in sputum is called hemoptysis, which is divided into small amount of hemoptysis, medium amount of hemoptysis, and large amount of hemoptysis. The first priority of treatment is to stop the bleeding. Small amount of hemoptysis can be prioritized for examination, such as chest CT examination and bronchoscopy, to clarify the cause first. For massive hemoptysis, emergency hemostasis and resuscitation are the main priority to save the patient’s life first. Because there are risks in the process of examination, the most dangerous is hemoptysis and asphyxia, hemoptysis and asphyxia can be life-threatening, so first of all, we must ensure that it is not blocked into the trachea, and we must get it out. There are many measures to stop the bleeding, the most common in internal medicine is the application of posterior pituitary or phentolamine, and in heart disease, nitroglycerin should be used together to stop the bleeding first. If the above treatment does not work, the bleeding can be stopped by tracheoscopy. As long as we know which section is bleeding, the first time we can’t stop it, we can block it with a balloon, at least it won’t suffocate, so the bleeding will stop. Of course, there are also transvascular interventions to stop the bleeding. Transvascular interventions are effective measures to stop the bleeding by finding which blood vessel is bleeding, such as embolizing the bronchial artery. After the hemorrhage is effectively stopped, the cause of the hemorrhage will be treated. Because people with moderate hemoptysis and massive hemoptysis should not be moved, and the bleeding may increase once they are moved, precautions are very critical at this time. Specific points include the following: first, do not drink boiling water, because heat expansion and cold contraction, a hot blood vessel expansion, to drink cool water, warm water, and bathing can not take a hot bath; second, when lying in bed to the affected side, found that the left side of the bleeding to the left side, to keep the right side, so as not to involve the right side of the lungs; third, absolute bed rest, less movement; fourth, the patient should be in a quiet state, because people are actually in a Fourth, the patient should be in a quiet state, because the person is actually in a very quiet state, which is most conducive to stopping the bleeding. If the patient’s blood pressure is high, the blood pressure should be controlled; if the patient is irritable and anxious, sedation and anti-anxiety treatment should be given. However, it is important that sedation and cough suppression should not be excessive, so as not to affect the cough center and cause asphyxia if the blood is not easily discharged. In conclusion, if blood is found inside the sputum, go to the hospital promptly to the physician, who will give the appropriate treatment.