There are many causes of tuberculosis hemoptysis, mainly divided into the following points: 1, tuberculosis itself will appear in the sputum with blood or hemoptysis, but also the most common cause of tuberculosis hemoptysis fuse; usually the rupture of the aneurysm in the tuberculosis cavity will directly cause the phenomenon of tuberculosis hemoptysis, the patient from the mouth spurts a large amount of blood, a little inattention may lead to suffocation and death, so to Regular hospital checkups are needed to prevent hemoptysis; 2. Combined bronchial dilatation can also cause tuberculosis hemoptysis; 3. Combined lung cancer, which is becoming more and more common in clinical practice, with the largest number of men suffering from lung cancer.