Objective: To explore the clinical effect of three different dosage-forms of Zhishi Xiaopi Pill (ZSXPP, 枳实消痞丸) recipe on functional dyspepsia (FD). Methods: The total of 158 patients were included in this study and were randomly divided into four groups. Three group patients of FD were respectively treated with three different dosage-forms of ZSXPP, while the control group were treated with cisapride. Results: The treatment outcome indicated that there was no difference in the total therapeutic efficacies of these four groups. The tension of vagus nerve and the plasma level of motilin in FD patients were significantly increased by the treatment with ZSXPP; the impaired contraction function of lower esophageal sphincter in some FD patients was improved, too. Conclusion: All of three different dosage-forms of ZSXPP were as effective as cisapride on FD. The efficacy was partly due to the improvement of esophageal and gastric dynamics which was probably related to the increasing of the tension of vagus nerve and the plasma level of motilin.