Baby cake'' is a kind of baby food which has been traditionally used in certain parts of China. It consists half of rice powder and half of flour. The lysine is the first limiting amino acid of "baby cake'' and it is also deficient in calcium.In order to improve the nutritional value of "baby cake", we enriched it with 0.25% lysine and 0.122% calcium.72 Wistar derived rats were devided into 3 groups: group A was fed with "baby cake" enriched with 0.25% lysine, group B enriched with 0.25% lysine and 0.122% calcium and group C with original "baby cake" as control.The results revealed: body weight, weight and length and density of bones all were better in enriched groups and the best was in the group enriched with lysine and calcium. All were statistically significant.