Abstract: Understanding the developmental time sequence characteristics of the spine and appendage skeletal system of Platax teiracan provide a theoretical basis for its seedling breeding, environmental adaptation and classification. We stained and analyzed the spine, pectoral fin, pelvic fin, anal fin and caudal fin ofP. teira larvae (0–30 dah) by the method of cartilaginous and bony staining. The results show that there were 24 vertebrae, and the tail bone was composed of five subcaudal bones and two upper caudal bones. The development sequence of appendage branch fin bones was pectoral fin, abdominal fin, caudal fin, anal fin and dorsal fin. The first hatched fish already had pectoral branch fin bone primordium and notochord. At 4 dah, the pectoral fin and pelvic fin developed first; at 7 dah, medullary arch and vein arch appeared; at 13 dah, the morphology and number of larval bones were basically stable; at about 26 dah, ossification began in juvenile fish, and the spine and spine were the first to complete ossification; at 30 dah, the larvae entered the juvenile stage, and their appearance has been fixed. The typical characteristics were three black bands on the head, trunk and tail, and the body was white silver. When being stimulated or stressed by external stimulation, the body color changed to black instantly, and the shape had no difference from that of the juvenile. The developmental sequence of the spine and appendage bones was basically the same with that of other sea fish, but the time nodes and number of the development of bone were different.