Tuberculosis with metastases is relatively serious if it is still active, but not serious if it is old and can be monitored continuously. Whether TB with metastases is serious or not depends on whether it is still active. If it is in the active stage, i.e. in the middle of the TB course, it is relatively serious. At this time, the tuberculosis bacillus is more active, which can cause dry cough, fever, night sweats and other symptoms, and can seriously affect the normal respiratory function and mental state, immunity and so on. However, if the tuberculosis foci are old, the degree is relatively mild. Tuberculosis has turned into calcified foci, even if metastatic foci appear, usually does not cause secondary infection. And the symptoms are relatively mild, some of which may include a mild cough. Patients with tuberculosis are advised to seek timely medical attention for examination and treatment under the guidance of a doctor.