This experiment was conducted to investigate the effects of apple pomace supplementation on feces and reproductive performance of gestation sows. Eighty healthy gestation sows (Landrace×Large White) with the similar parity and body condition were randomly allocated to 2 groups (control group and experimental group) with 40 replicates per group and 1 sow per replicate. From day 1 to 89 of pregnancy, gestation sows in the control group and experimental group were fed gestating sows' diets A (without apple pomace) and B (contained 10% apple pomace), respectively. From day 90 of pregnancy to parturition day, gestation sows in the control group and experimental group were fed lactating sows' diets A (without apple pomace) and B (contained 5% apple pomace), respectively. The experiment began at pregnancy and lasted for a pregnancy period. The results showed as follows: 1) apple pomace supplementation resulted in defecate unobstructed, faeces increased in number and color was deep-dark, and the shape of feces showed a tubular and depositing forming, which indicated that the constipation was released by apple pomace supplementation; 2) apple pomace supplementation had no significant effects on litter size, alive litter size, litter weight of birth and average weight of birth (P>0.05). However, the constipation rate of gestation sows in experimental group was significantly reduced (P<0.01), which was lower than that of gestation sows in control group by 35%. It is concluded that apple pomace supplementation significantly reduces the constipation rate of gestation sows, but has no significant effect on reproductive performance of gestation sows.