Abstract: From May to June 2015,digestibility trials were conducted on 6 red pandas(3 of which were rescued in the wild) in Chengdu Zoo. The trial consisted of 7 days pre-experiment and 7 days of normal experiments,aiming to analyze the digestibility of red pandas of different years of captivity,and quantify the influence of different years of captivity on digestion.The result showed that the apparent digestibility percentages of dry matter,fat,crude protein,crude ash and corase fiber for red pandas of this trail were 61.16%,82.28%,76.6%,15.91% and 13.39%,red pandas had relatively lower digestibility of crude ash and corase fiber.The wild rescued pandas with 2 to 3 years of captivity had apparently higher digestibility of dry matter,crude protein,fat,corase fiber and crude ash,while the red pandas under 1 year of captivity had relatively lower digestibility of fat and corase fiber,and their daily food consumption was lower than other 2 groups in this trial as well.The red pandas with larger playground had higher digestibility of each nutritive matter than those without playground.Over a series of experiments,the result showed that the daily ration could meet the energy that was needed to maintain life activities of red pandas in Chengdu Zoo,but the bamboo leaves and bamboo shoots in the daily ration should be balanced,the captive red pandas should be equipped with large enough sports field,and there should be a transition period on daily ration for red pandas from wild to captivity,more bamboo leaves and apples should be added during this period.