The “Study on Technical System of the Life Cycle of Battery Electric Buses” follows the life cycle stations of battery electric buses, from its procurement, charging, operation, maintenance, to the decommissioning of batteries. It provides a technical guide for stakeholders in each of the procedures to achieve safety, efficiency, and sustainability. As part of the study, eight case cities covering various geographic area and social-economic level were identified: Zhengzhou, Chengdu, Shenzhen, Jinan, Guangzhou, Shenyang, Yinchuan, and Xi’an. Through surveys and interviews, the study collected first-hand data on the challenges, solutions, and best practices in these cities. Based on literature review, comparative analyses, field study, and expert consultations, the study then provides recommendations for all relevant stakeholders.