To study the efficacy of Pediatric Dingchuan treatment on childhood asthma and its influence on T cell function. Methods: A total of 150 cases of childhood asthma had treated in our hospital from January 2014 to January 2015 were selected. They were divided into two groups, a study group and a control group, according to a random number table. There were 75 patients in each group and the control group received conventional treatment, and the study group received pediatric Dingchuan treatment. The clinical efficacy and adverse reactions of two groups were compared. The absolute value of Th1 cells before and after treatment, and peripheral blood T cell subsets were compared. Results: The total efficiency of the study group was 93.3％（70/75)which was significantly higher than 77.3%(58/75)in the control group. The difference was statistically significant(P<0.05). Th1 absolute value after treatment of the study group was significantly higher than before the treatment, and significantly higher than the control group. The difference was statistically significant(P<0.05). After the treatment, CD3+, CD4+ and CD4+ / CD8+ ratio of the study group were significantly higher than before the treatment, and significantly higher than the control group. CD8+ became significantly lower after the treatment, and significantly lower than the control group, the difference was statistically significant(P<0.05). Adverse reactions of two groups did not show statistical significant（P>0.05）.Conclusion: Pediatric Dingchuan treatment of childhood asthma has a relatively good clinical efficacy and can significantly improve the accessibility of T cells.