The commercialization of continuous waste plastics pyrolysis process has not been succeeded in our country due to several technical problems related to waste plastics charging, discharging of residues, efficiency of heating and heat transfer, production of high boiling point oil, production of Cl compounds from PVC. In this research, it was attempted to develop an advanced continuous pilot scale waste plastics pyrolysis plant with which the technical problems of the conventional process were settled. The problems were settled by combining an inclined screw type waste plastics transport equipment, a CSTR pyrolyzer, and an inclined screw type residue pyrolyzer. A 60 kg/hr treatment scale continuous system was built and the continuous operation of this system was conducted for longer than 60 hrs without any mechanical troubles. The result of continuous operation using simulated waste plastics mixtures(PP:PS=60:40 or LDPE:PP:PS=40:36:24) showed that 73.9∼79.5% of oil yield was possible with this system.