Objective:To observe the changes of ethology and monamine transmitter in stagnation of liver qi model rat and the intervention of bupleurum root,and to investigate the ethological character in stagnation of liver qi model rat and the mechanism of bupleurum root on dispersing stagnated liver-qi for relieving qi stagnation.Methods:Wistar rats were divided into normal group,model group,Chaihu Sugan san group(8.50g/kg),bupleurum root low,middle,high dosage group(0.81、2.43、 4.86g/kg).Except the normal group,othe...