Objective:To establish purification technology of total alkaloids from skin of Bufo bufo gargarizans by NKA-9 macroporous resin.Method:The content of total alkaloid(5-HT) from skin of B.bufo gargarizans was chosen as index,optimized condition of adsorption and desorption of NKA-9 macroporous resin and established purification technology condition of total alkaloids from skin of B.bufo gargarizans.Result:Optimum purification process conditions were:used NKA-9 macroporous resin,adsorption temperature was 25 ℃,loaded 4 times the amount of c...