This experiment was conducted to evaluate the effects of weaner days of age on intestinal development of meat rabbits. A total of 120 nests of new born meat rabbits borned were selected and randomly divided into four groups with 30 nests per group. The meat rabbits of four groups were weaned by the age of 21, 25, 28 and 35 days, respectively. The experiment lasted 56 days. The results showed as follows: 1) weaner days of age had significant effects on the weight of stomach, small intestine and caecum of rabbits by the age of 28 and 35 days (P<0.05), which tended to be increased by delayed weaner days of age, however, the weight of digestive organs and the length of small intestine of rabbits by the age of 49 and 56 days were not significantly affected (P>0.05). 2) Weaner days of age had significant effect on the height of villus of duodenum (28, 35 and 49 days of age), jejunum (28, 35, 42 and 49 days of age) and ileum (28, 35, 42 and 49 days of age) (P<0.05 or P<0.01), which tended to be firstly increased and then decreased by delayed weaner days of age, however, weaner days of age had no significant effect on the height of villus of duodenum, jejunum and ileum by the age of 56 days (P>0.05); the height of villus took 2 to 3 weeks to recover after weaned, the group weaned by the age of 21 days recovered slowest, and the group weaned by the age of 35 days recovered fastest. 3) Weaner days of age had significant effect on the depth of crypt of duodenum (28 and 35 days of age), jejunum (28, 35 and 42 days of age) and ileum (35 days of age) (P<0.05), which tended to be decreased by delayed weaner days of age, however, weaner days of age had no significant effect on the the depth of crypt of small inrestine of rabbits by the age of 49 and 56 days (P>0.05). 4) Weaner days of age had significant effect on villus height/crypt depth (V/C) of duodenum, jejunum and ileum of rabbits by the age of 28, 35 days (P<0.01), which tended to be increased by delayed weaner days of age, however, weaner days of age had no significant effect on V/C of small intestine of rabbits by the age of 56 days (P>0.05). It is concluded that weaner days of age can affect the intestinal development of rabbits before 49 days of age, but has little influence on that of rabbits after 49 days of age; early weaning can reduce the height of intestinal mucosal villus, but increase the depth of crypt; of earlier-weaned group; the damage on mucosa of small intestinal of rabbits can be alleviated by the delayed weaner days of age, and it generally require 2 to 3 weeks for rabbit to restore the structure of mucosa of small intestine.