larvae raised under culture conditions were analyzed. From hatching to 56-days-old, ten larvae were sampled every five days, and the dorsal mantle length, mantle breadth, body weight, cuttlebone length, cuttlebone breadth and lamella number were measured. An exponential model could describe the relationships between dorsal mantle length, body weight, lamella number and days, respectively. However, there were two different phases during early development, caused by the perfection of organ development and change in foods. The lamella in the cuttlebone was not deposited daily, which demonstrated the number of lamellae in the cuttlebone did not correspond to the actual age. In addition, allometric growth of the mantle and cuttlebone were discovered, indicating that these important organs, like the swimming organ, had developed prior to others. The present results support the hypothesis that allometric growth patterns also exist in cephalopods during early ontogeny. The data in the present study provide a basis for artificial seed breeding of golden cuttlefish.