In response to climate change, IMO passed the resolution MEPC.304(72) on the preliminary strategy for reducing greenhouse gas emissions from ships in 2018. Compared with 2008, the carbon emission intensity of international shipping should be reduced by 40% in 2030 and 70% in 2050. %. In order to meet the new requirements of the Energy Efficiency Index (EEXI) and Carbon Intensity Indicators (CII) newly added by the amendments to MARPOL Annex VI of the MARPOL Convention, this paper mainly analyzes the concept, calculation and rating method of the carbon intensity indicators. For example, simulation calculation and analysis are carried out for the bulk carriership of Taiwanese shipowners, which can be used as a reference for Taiwan shipowners' coping strategies.