Abstract: In order to study the effects of micropowders of stalks and leaves from Radix Astragali added into daily ration on growth performance and the immune organ indices in laying baby male chicks, Ninty six 1-day hyline brown male chicks were chosen and then were randomly assigned into four treatment groups (including a control group and three experimental groups). The chicks from control group were fed basal diet and the ones from experimental groups were fed the feeds to which 0.5%, 1%, 2% micropowders of stalks and leaves from Radix Astragali were added respectively during 35 days breeding period. The results showed that the body weights and the immune organ index of male chicks all increased to varying degrees along with the more amount of micropowders of stalks and leaves from Radix Astragali. The results indicated that micropowders of stalks and leaves from Radix Astragali could improve the growth performance and immunity function of egg-type young cockerels