Abstract: 55 ripe wild red-bellied squirrels (Callosciurus erythraeus) were captured in Yingjing. After they were anaesthetized by use of ether,their cardiac blood was collected and analyzed with the automatic hematology analyzer in order to detect 18 blood parameters. The results showed that the MCH and MCHC levels of the male red-bellied squirrels were significantly higher than those of the female(P < 0.05), but there were no notable differences in other parameters such as WBC, RBC, etc(P > 0.05). Overall, the normal rang of the red-bellied squirrels' physiological blood parameters were established,which would provide reference data for further research on red-bellied squirrels' physiological state,reproductive characteristics and disease control.