Cavities may appear after a period of tuberculosis treatment. It is necessary to continue anti-tuberculosis treatment and observe the status of the cavities, if they continue to deteriorate, surgery may be needed. If the cavity appears after a period of tuberculosis treatment, first of all, we need to continue anti-tuberculosis treatment. The main reason for the cavity is the condition of tuberculosis, so controlling the tuberculosis is the fundamental method of treatment, and use anti-tuberculosis drugs such as isoniazid according to the doctor’s prescription. At the same time, we need to continue to carry out lung CT and other examinations to observe whether the cavity can heal on its own, if it can heal, no further treatment is needed. If the cavity continues to increase in size and worsens, surgical resection may be required. The doctor will decide whether or not to perform surgery according to the specific situation, and the treatment should be carried out according to the doctor’s instructions.