文章从世界能源消费不断增长的社会发展需求出发，考虑日益苛刻的环境保护政策和举世关心的可持续发展的战略方针，结合今后科学技术的进展，分别从产品需求和资源供应、产品规格和环境保护、非常规石油进入角色及天然气前景引人瞩目四个专题进行论述，对21世纪的以石油和天然气为代表的非再生能源工业形势做了初步展望。

The speed of international social-economic development closely depends upon the growth of world energy consumption, which in turn has to meet the stringent environmental protection policy that controls the total amount of greenhouse gas released to the atmosphere in the burning of fuel. In order to achieve the sustainable development of all nations, it is advisable to give an outlook to the future situation of world oil and gas industry as the representatives of the non-regenerable energy resources. This paper presents an opinion on the future development of oil and gas industry based on limited data published in literature together with controversial forecasts by different authors and covers four subjects： (1) the demand and supply of oil and gas in the new century; (2) the specifications of oil products to meet the environmental regulations; (3) the role of unconventional oil in the energy industry and (4) the brilliant future of natural gas.