According to the linguistic studies, Taiwan is considered as the homeland of Austronesian who widely distribute in the Oceania. However, the DNA analytical result is against the homeland view. As the prehistoric people are lack of script history to realize their ancestors' migrating routes, the scientific research of archaeological remains could be the key to the past. By the microstructure and chemical composition studies on the hard pottery and glazed ceramics excavated from Chiuhsianlan site, it is seemed that these high temperature ceramics should not be made in local. Both the carbon 14 dating and glaze chemical composition analytical results suggest these high temperature ceramics might be imported from South China.