Coughing up blood and losing weight are common diseases such as tuberculosis, lung cancer, etc. It is necessary to improve the examination and treat the primary disease, such as anti-tuberculosis treatment or surgical treatment. 1. Tuberculosis is an infectious disease of the lungs caused by infection with Mycobacterium tuberculosis, and its main symptoms include coughing, coughing up blood, low-grade fever, and emaciation. The main symptoms include cough, coughing up blood, low-grade fever, and lethargy. Tests for tuberculosis include X-ray examination and sputum examination for Mycobacterium tuberculosis. The treatment for TB patients is mainly anti-tuberculosis treatment, including the combination treatment of isoniazid, rifampicin and other drugs. 2. Common high-risk factors of lung cancer include smoking, radioactive substances and other reasons, and the main symptoms are cough, coughing up blood, chest pain, fever, emaciation and so on. The main symptoms are cough, coughing up blood, chest pain, fever, weight loss, etc. The main examinations for lung cancer are X-ray examination, MRI, sputum exfoliative cytology, etc. Treatments for lung cancer mainly include surgery, radiotherapy, chemotherapy and so on. If the above symptoms appear, it is recommended that patients should consult hospitals in time, cooperate with doctors to improve examination and take active treatment.