Abstract: We adopted oral Liquid Leukopoiesist-a compound pharmaceutics of herba to treat 54 cases of Leukopenia of malignant tumor patients which were caused by radiotherapy and chemotherapy. The effective rate was 75.9% in a week. Around treatment, the WBC mean elevated 1.6×10⁹/L. Compared with control group, the difference was very notable. Evenmore, the effects of previ-ously untreated or treated patients in experiment group were obviously higher than that in control group, and the effects of previously untreated patients in experiment group were the best, the ef-fective rate was 84.4% in a week. Indicative of the features of the liquid were high curative eff-fect、rapidity in showing its effect and slight side and toxic effects.