The results showed that: 1) early supplementation of VA showed significant effects on linear growth of infants: The gain in weight and in height during the first 6 months of the experimental group was higher than that of the control group, 4.69 ± 0.72 vs 4.20 ± 0.89 kg (p<0.01); 12.84 ± 3.06 vs 11.58 ± 2.57 cm (p<0.01).