Objective To study the therapeutic effect of Laokang Decoction （Herbal decoction for pulmonary tuberculosis） on the recurrent pulmonary tuberculosis in the TCM syndrome of yin deficiency with toxic stasis.Methods Totally 96 enrolled patients were randomized into treatment group and control group

48 cases in each.The control group was given routine treatment with the drugs of modern medicine

based on which the treatment group was administered Laokang Decoction for 12 courses in succession

2 weeks as one course.Then

the comprehensive effect

symptom-disappearance after 15 days

improvement in X-ray examination

sputum smear

and negative-turning in sputum culture were observed.Results Compared with the control group

the treatment group was superior in total effective rate and symptom-disappearance after intensive treatment （P<0.05）.Meanwhile

there was significant difference in the focus and cavity of pulmonary tuberculosis shown in X-ray examination

sputum smear and negative-turning in sputum culture between the two groups （P<0.05）.Conclusion Laokang Decoction is effective and safe for the treatment of recurrent pulmonary tuberculosis in the TCM syndrome of yin deficiency with toxic stasis.