[en] Impurity transport has been studied in the HL-1 M tokamak under the conditions of ohmic discharge and LHCD. Metallic impurities were injected into the plasma using the laser blow-off technique. The ionized metallic impurity lines were measured using a VUV spectrometer. Simulation analyses of impurity transport were carried out for ohmic discharge and LHCD. Using the numerical simulation with the impurity transport code LBO, the diffusion coefficient D(r) and inward convection velocity υ(r) were obtained. The impurity transport coefficient D(r) during LHCD decreased to nearly half of that during ohmic discharge. The experimental results show that the characteristics of the impurity confinement during LHCD is better than during ohmic discharge