Abstract: Chinese ancient porcelain is prized by international art collectors, so its date identification is an important problem. Visual identification can not accurately discern modern forgeries produced by high technology. In recent decades modern technology has achieved great progress in identifying ancient porcelain Thermoluminescence is an absolute dating technique, which does not rely on a perfect database. After four decades of development, the pre-dose and high-temperature peak measure techniques have been developed, and furthermore a kind of quick and nondestructive thermoluminescence measurement by CO2 laser heating has obtained important results.