Drug-resistant tuberculosis was related to miR-548 m, miR-631, miR-328-3p, and miR-let-7e-5p, as well as let-7b-5p, miR-30a-3p, IL-27, and CXCL9/10/11 in TB patients’ lesion tissue and peripheral blood. The gene discussed is CXCL9; the disease is tuberculosis.