Objective To explore the cuscuta seed's effect on mice immune system . Methods 50 mice were divided into 5 groups : negative control group、positive control group、low dose group 、medium dose group 、high dose . Coefficient of animal organs in all groups and phagocytosis function of macrophagocyte in abdomen cavity 、cell multiplication of splenic lymphocyte 、interleukin's activity . Results cuscuta seed could promote the growth of mice's immune organs such as spleen and thymus gland (P<0.05) and improve the ph...