Thermoluminescence (TL) dating using an activation method in pre-dose technique was described. Three vases in underglaze blue with elephant ears and one vase in underglaze red with elephant ears in Yuan Dynasty were dated by this method. The results show that the TL ages are all less than 100 a B.P.

and in which sbc 648 and sbc 649 were imitated in recent years. This method is quick

convenient and reliable for porcelain dating with the age of less than 1000 a B.P.. As a comparison

a porcelain sample with underglaze blue in Yuan Dynasty was dated too

and its TL age is 620±140 B.P.. In addition

some complex factors associated with dating have been discussed and a resolution has been raised

which will help improve the accuracy of TL dating.