Green and low-carbon transition is one of the most important developments for the oil and gas industry. It is of great significance to the realization of carbon peak and carbon neutrality in the energy sector, and it plays very important role in addressing global climate change issues and the realization of sustainable social and economic development. The paper studies the current standardization situation of the green and low-carbon transition in oil and gas industry worldwide, analyzes the standardization difference and prospects the standardization development. The study provides a useful reference for the green and low-carbon practice and standardization of oil and gas industry.