In this article,we studied the thermoluminescence of pure PbWO4 and P bWO4:Y above room temperature (30℃—300℃).We found that Y3＋-doping reduces the intensity of thermoluminescence of PbWO4 and moves the peaks of thermoluminescence to higher temperature after γ-ray irradia tion about 1Mrad dose,which can improve the stability of PbWO4 lumine scence.We also calculated the parameters of the traps,namely the depth of traps, frequency factor and the time of release from the traps at 300K.Visible light ca n also influence thermoluminescence.The intensity of thermoluminescence below 24 0℃ increased after blue and green illumination for all samples.Furthermore,visi ble light can induce new thermoluminescence peaks in some samples,which is cause d either by that the carriers released by visible light are subsequently retrapp ed by some shallower traps,or the visible light illumination may possibly create new types of traps.