This experiment was conducted to study the effects of Taraxacum polysaccharides on growth performance and immune function of growing meat rabbits from weaner to 3 months of age, and to provide a theoretical support for exploitation of a new-style feed additive. A total of 160 35-day-old weaner rabbits with average body weight of (650±50) g were randomly allocated into 4 groups with 2 replicates per group and 20 rabbits per replicate. The control group (group Ⅰ) was fed a basal diet and experimental groups (groups Ⅱ, Ⅲ and Ⅳ) were fed the basal diets supplemented with 0.1%, 0.3% and 0.5% Taraxacum polysaccharides, respectively. The experiment lasted for 50 days. The results showed as follows: 1) the average daily gain in groups Ⅲ and Ⅳ was significantly higher than that in control group (P<0.05 and P<0.01,respectively), the ratio of feed to gain in group Ⅳ was significantly higher than that in control group and group Ⅱ (P<0.01). 2) The spleen index in groups Ⅱ, Ⅲ and Ⅳ was significantly higher than that in control group (P<0.01), and the thymus index in groups Ⅲ and Ⅳ was significantly higher than that in control group (P<0.01). 3) There was no significant difference in serum immunoglobulin A content among all groups (P>0.05), and the serum immunoglobulin M content in groups Ⅲ and Ⅳ was significantly higher than that in control group (P<0.01), the serum immunoglobulin G content in groups Ⅲ and Ⅳ was significantly higher than that in control group (P<0.05). It is concluded that dietary Taraxacum polysaccharides can improve growth performance and immune function of growing meat rabbits from weaner to 3 months of age,the appropriate supplementation is 0.5%.