Thermoluminescent dosimeters(TLD) are nowadays widely used in radiation therapy to measure the radiation dose. We experimented the polymers to response in radiation and attempted to apply in clinical use, the polyethlenewhich is tissue equivalent material, instead of metallic substances. Polymers have the properities ofthermoluminescence(TL) and thermally stimulated currents(TSC)which are due to several kinds of charged particlessuch as diploles, electronic trapped charges and mobile ions. Several peaks are detected in the thermallystimulated current in polyethylene under bias field, V, by heating from room temperature to 100degrees(C) shortlyafter irradiation. As V increases, both the peak temperature Tm and the activation energy H decreases, while thepeak currentim increases. We plotted the Tm-V and Im-V cureves and calculated the elecltron trap depth(Ho) withthe recombination operative TSC theory and compared the peak TSC with radiation doses and energies.