Tuberculous pleurisy has been treated for a month, and there is sputum in the mouth may be combined with inflammation of the respiratory system, or it may be misdiagnosed, so the treatment is ineffective. 1. Combined inflammation: the immunity of patients with tuberculous pleurisy is low, easily infected with bacteria and viruses, so there will be sputum in the mouth, should be timely symptomatic treatment, and at the same time appropriate respiratory function exercise. 2. Misdiagnosis: Tuberculous pleurisy is not easy to diagnose, generally easy to misdiagnose, if the treatment of one month symptoms are not relieved should be suspected of misdiagnosis, further examination, a clear diagnosis, adjust the treatment program. Tuberculous pleurisy treatment for a month, sputum in the mouth may also exist other reasons, it is recommended that patients should go to the hospital in time, further examination, by a professional doctor to make adjustments to the treatment program.