Public transport has gradually become the focus of the development of urban green transport mode of transport. In order to maintain the city's ecological balance, the bus industry has become the focus of energy-saving emission reduction areas. This paper introduces the current situation of energy saving and emission reduction of urban public transport in China, and the main measures of energy saving and emission reduction in the field of urban public transport, Including vehicle emission standards, the development of new energy vehicles and tax policies. Through analysis of foreign experience, provide suggestions for energy saving and emission reduction of urban public transport in China.