In the hybrid HVDC system, the rectifier station adopts the line commutated converter (LCC) and the inverter station adopts the voltage source converter (VSC). Since the converter structures and the control strategies at two ends of the line are different, the fault characteristics at rectifier side and inverter side are different. In order to enhance the protection sensitivity, this paper proposes a hybrid directional comparison pilot protection scheme for LCC-VSC hybrid HVDC transmission lines, based on the respective fault direction characteristics at rectifier side and inverter side. The LCC-based rectifier side adopts the traveling wave energy based directional unit and the VSC-based inverter side adopts the current fault component based directional unit. Simulation results show that the proposed protection scheme identifies the internal fault accurately and selects the faulty line correctly. Besides, it has adequate sensitivity under high-resistance faults.