The thermoluminescence pre-dose technique for dating ancient porcelain was developed in many laboratories. This technique was the only method which could directly determine the age of old porcelain. But the thermoluminescence high-temperature signal (over 200℃) had not been studied. We conducted a preliminary study of the characteristics of thermoluminescence high-temperature signal

such as the TL natural glow curve

and the glow curves after beta or alpha irradiation. Most of the 32 ancient porcelains had thermoluminescence high temperature signal

and only one peak in their TL glow curve was found.