To promote the green taxis in Macau SAR has being attractive because of the increasingly air pollution caused by vehicles' emission. In order to improve the air quality and living condition in Macau, this paper shows us some environmentally friendly taxis to replace theconventional ones. In this paper, an overall picture of the current situation and tendency of world's taxies is firstly presented. Secondly, the vehicle emissions of Macau taxi including environmentally friendly ones are detailedly demonstrated and compared. On the basis of feasibility, cost, safety and regulations related to Macau, the existing vehicle models are also comprehensively elaborated and evaluated. At the end of the paper, it will predict possible directions of the development of taxis in the near future of Macau. The analysis and evaluations of vehicle models are all considerate of what really Macau is. © (2012) Trans Tech Publications, Switzerland.