The effect of calcium supplement in diet on the metabolism of Ca and P in Gansu Zokor (Myospalax cansus) was determined by comparison of calcium supplement group(n =7) and control group (n =7) during April to May,2007. The contents of Ca and P in femur and plasma of Gansu Zokor were detected respectively by AAS (Atomic Absorption Spectrometry),SP (Spectrophotometry),and by Auto Biochemistry Analyzer. The results showed that the contents of femur Ca and P increased significantly (P < 0.05) after Ca supplementation in diet,and that significantly positive correlation between Ca /P absorption and the contents of femur Ca /P(P < 0.01)was found. However,the concentrations of plasma Ca and P did not change (P > 0.05),and there was negative correlation,although not significant (P > 0.05),between the concentration of plasma Ca /P and the contents of femur Ca /P after treatment. It is suggested that high efficiency of Ca /P retention in Gansu Zokor may rely on a VD₃ independent passive pathway.