Chemotherapy for pulmonary tuberculosis refers to the treatment with anti-tuberculosis chemotherapy. For patients with pulmonary tuberculosis, anti-tuberculosis treatment is required promptly once the diagnosis is clear. For patients with primary treatment, the course of antituberculosis therapy is 6 months, with the first 2 months being the intensive period, during which rifampin, isoniazid, ethambutol and pyrazinamide are usually chosen; the second 4 months are the consolidation period, during which rifampin and isoniazid are usually chosen. In the case of patients with relapsed tuberculosis, they also need to be treated with a combination of anti-tuberculosis chemotherapy. The general course of treatment is 9 months, and streptomycin or quinolones need to be added to rifampin, isoniazid, ethambutol and pyrazinamide, with the first 3 months being the intensive period and the last 6 months being the consolidation period.