This paper summarizes the implication and characteristics of tight oil from different domestic and foreign tight oil definitions and criteria, and statistically analyzes foreign tight oil resources and their distribution. It selects tight oil-gas fields of large development scale or mature technology as the research subject, and analyzes them from different perspectives such as geological properties,development history and status, development status technology, cost of discovery and development, development effect and laws, etc. It concludes the major development technology and policies aiming at different geological conditions, and the variation law of key development indexes including initial production and decline rate. Combined with the tight oil development status and geological characteristics of Sinopec, this paper draws inspirations in terms of geology, technology, basic research, and cost, etc. All these recognitions will be of great reference and guiding significance to the development orientation, technology policy making, recognition of development law, scheme optimization, organization and operation, and management mode of domestic tight oil development technology.