Petroleum will still be the major energy resources in the 21st century. Petroleum refining technologies will develope further. The refining technologies with broad prospects in 21st century would be the technology for production of the clean gasoline to reducing automotive emission, the technology for production of the low sulfur and low aromatic diesel, the technology for production of hydroprocessing lubricating base oils, the technology for conversion of heavy oils with hydrocracking and catalytic cracking, the technology for energy comprehensive utilization integrated with the residue processing, the information and process control technologies for modernization of refineries, etc.