With the aggravation of the trend of population aging, the conventional bus planning and service in Lhasa city need to be adjusted continuously to meet the needs of the elderly, so that they can enjoy convenient transportation services to better integrate into the city life, so the conventional bus improvement in the context of aging is a relevant study. According to the research characteristics of this paper, Lhasa Chengguan District is selected as the research area, and the current situation of regular bus development in the region is briefly analyzed, and based on the Gaode Map API to obtain the station and road network data, the spatial barrier model is used to assess the accessibility of regular buses, and then ArcGIS is used to visualize the data. Finally, the conventional bus improvement strategy adapted to the aging society is proposed from the three aspects of bus stops and road network, bus facilities for aging, and bus service quality, so as to provide the elderly with more convenient, comfortable, and barrier-free bus services, thus realizing the sustainable development of Lhasa City.