Objective To characterize the growth and development traits of the first generation young Tibet mini-pigs.Methods The measurements of body weight,body length,chest girth,wither height,rectal temperature,respiratory rate,heart rate,blood physiological and biochemical traits of the first generation young Tibet mini-pigs were carried out at a breeding farm in Guangzhou.Results The Tibet mini-pigs in Guangzhou area had smaller size,stable growth performance and the same growth rate as that reared in original area.It demonstrated that rectal temperature,respiratory rate and heart rate were similar among the first generation and generations raised in original area.Meanwhile,no significant difference was found between boar and gilts(P>0.05).Except basophils,monocytes and serum BUN,other parameters of the F1 male and female pigs were also approximate and close to that of human beings.Conclusion The present study indicates that Tibet mini-pig is an ideal experimental animal for medical researches due to its smaller size,stable growth performance and physiologically and biochemically closely related to human beings.