Abstract: In order to investigate the effects of tonifying kidney herbs and 25（OH）D₃ on the production performance of high gestational age sows at late gestation, sixty healthy Xinmeiline Landrace sows of the 7 th gestational age were randomly divided into control group, low calcium and low phosphorus group, Chinese medicine group, Chinese medicine with low calcium and low phosphorus group, 25（OH）D₃ group and 25（OH）D₃ with low calcium and low phosphorus group, with 10 replicates per group and one pig each replicate. The animals in the control group were fed tapping fetal sow diet（Ca∶P=0.75∶0.59）, the animals in the low calcium and low phosphorus group were fed tapping fetal sow diet with the low calcium and low phosphorus（Ca∶P=0.65∶0.51）, the animals in the Chinese medicine group were fed tapping fetal sow diet with tonifying kidney herbs（the addition level of 2.5 kg/t）, the animals in the Chinese medicine with low calcium and low phosphorus group were fed the low calcium and low phosphorus tapping fetal sow diet supplemented with tonifying kidney herbs（the addition level of 2.5 kg/t）, the animals in the 25（OH）D₃ group were fed tapping fetal sow diet supplemented with 25（OH）D₃（the addition level of 50 μg/kg）, and the animals in the 25（OH）D₃ with low calcium and low phosphorus group were fed tapping fetal sow diet with low calcium and low phosphorus basal diet supplemented with 25（OH）D₃（the addition level of 50 μg/kg）. The sows were fed the above experimental diets from 85 days of pregnancy to 114 days of gestation, the experiment lasted for 30 days. At the end of the experiment, the total number of piglets, the number of live and dead piglets, the number of mummified and weak piglets, the average weight of live piglets of sows, and the daily weight gain of piglets at 0, 7, 14, 21 d were measured. The body weight of piglets at 0, 7, 14, 21 d was used to calculate the daily weight gain of 0-7 d, 8-14 d and 15-21 d, and the weaning nest weight and the organ indexes of heart, liver, kidney, spleen, femur, tibia and ribs of weanling pig were measured. The results showed that there was no significant effect on the total number of piglets, the number of live and dead piglets, the number of mummified piglets, the average weight of live piglets of high gestational age sows by adding tonifying kidney herbs and 25（OH） D₃（P＞0.05）. The daily gain of piglets from 15 to 21 days in the low calcium and low phosphorus group supplemented with 25（OH）D₃ was significantly increased compared with the low calcium and low phosphorus group（P＜0.05）. Compared with the control group, the weaning nest weight of piglets of 25（OH）D₃ group were significantly increased（P＜0.05）. Compared with the low calcium and low phosphorus group, the rib organ index of groups adding the tonifying kidney herbs to the diet was significantly decreased（P＜0.05）. Compared with the control group, the indexes of tibia and ribs organ index in the 25（OH）D₃ group were significantly increased（P＜0.05）. The results showed that the addition of tonifying kidney herbs and 25（OH）D₃ in tapping fetal sow diet could improve the production performance of high gestational age sows.