Understand the effect and quantity effectiveness relationship of Xiao Banxia Tang on mouse gastric intestinal motive and explore the functional mechanism of its preventing and treating vomiting.Method(1) Inject platinum into mouse abdominal cavity to make animal model. Divide mice randomly into 6 groups,i.e.,normal control, pathological model, positive control, high, middle and low dosage of Xiao Banxia Tang. Give medicine to each group for 2 weeks, measure the gastric emptying quota with half stable nutr...