Objective:To establish the characteristic Chart of Xiaobanxia plus Fuling decoction to find the basic substances of its antiemetic effects. Method: HPLC was used to establish the characteristic chart of Xiaobanxia plus Fuling decoction. Fifty pigeons were divided into several groups

treated with salt water or different dosage of Xiaobanxia plus Fuling decoction

Xiaobanxia decoction and Rhizoma Pinelliae. Pigeon vomiting models were estabished by copper sulphate. The latency period of vomiting

vomiting times and frequency were observed to study the antiemetic effect of Xiaobanxia plus Fuling decoction extract and the separating prescription(pinellia temate and ginger

pinellia temate) aqueous extract. Result: The content of ginger phenols in the original decoction was the highest

and among which 6-gingerol was the highest. Both the original decoction and its separating prescription had different degree of antiemetic effect. Xiaobanxia plus Fuling decoction>Xiaobanxia decoction>Rhizoma Pinelliae. Conclusion: Xiaobanxia plus Fuling decoction and its separating decoction have certain antiemetic effect. Considering the chart obtained form HPLC ginger phenols is the major content

which suggests that gingerol may be one of the major basis substance for its antiemetic effect in this prescription.