Objective:To study the effects of Chaihu Shugan powder on the contents of NO and 5-HT in the liver depression rats. Methods:Thirty SD rats,half male and half female,were divided into blank group,model group and treatment group.The rats were irritated by shaking the cages,letting them swim in icey water,flaping,suspending their tails,binding their limbs,etc,continuously and variably in 14 days to establish stagnation of liver qi models. The rats were treated with Chaihu Shugan powder in treatment group. The ...