In order to evaluate effects of Chinese medicinal herb (CMH) on growth and immunization of laying male chicks,eleven CMHs were used in this study,which are Astragalus membranacens (AM),Schisandra chinensis (SC),Ligustrum Lucidum(LL), Codonopsis, Scutellaria baicalensis (SB),Atractylodes macrocephala(AMA),Haw,Ginger,Acanthopanax scenticosns (AS),Angelica and Lycium, added to basal diet as 1%,respectively,with the basal diet supplemented with 50 mg*kg-1 bacitracin zinc(BZ) as the control.The body weight (BW) of birds were recorded at 1,21 and 42 days after birth,individually.The birds were vaccinated 0.50 mL against Newcastle disease (ND) with La sota vaccinel (containing mineral oil as adjuvant) by I.m.inoculation at 21 d of age.All of birds was vaccinated with F48E9 NDV by I.m.inoculation at 49 day of age.Blood samples were taken via wing vein from each bird on the day receiving the vaccination (Day-1) and on 14,21,28,30 and 34 d after vaccination (Days 14,21,28,30 and 34).Results showed that bodyweight (BW) and bodyweight gain(BWG) of the trial groups are similar to the control group.No significant differences of relative weight (RW) of bursa and spleen were observed among trial groups except for AS (P＜0.05).Serum antibody titers of SC,LL,Codonopsis,SB,AMA and Lycium groups were significantly increased (P＜0.05) in contrast to these control group on day-21 or 28 after immunized ND La sota vaccinel,which suggested that SC,LL,Codonopsis,SB,AMA and Lycium could augment antibody formulation.Furthermore,Compared with the control,antibody titers in SC,Codonopsis,AS,Lycium,SB and AMA group were higher (P＜0.05) after vaccinated with F48E9 NDV,which suggested that SC,Codonopsis,AS,Lycium,SB and AMA have activity of antivirus.In conclusion,CMH used in the present study have similar effect on BW and BWG of chicks compared with the control.Moreover,these eleven CMH have little influence on RW of immunized organ except AS.However,SC,Codonopsis,LL,Lycium,SB and AMA could augment antibody formulation. Furthermore, SC, Codonopsis, AS, Lycium, SB and AMA have activity of antivirus compared with the control.