As an important energy replenishment method for new energy vehicles，swapping mode has attracted widespread attention due to its advantages such as significant economy and good experience in energy replenishment. In 2021，the Ministry of Industry and Information Technology launched the pilot work on the application of swapping mode for new energy vehicles to promote the continuous improvement of swapping mode. At the same time，some involved enterprises have also accelerated the pace to deploy swapping mode. From the perspective of market size，the number of battery-swapped models has continuously increased，while production and sales have increased significantly. From the perspective of application scenarios，swapping mode has formed a certain scale in the sectors of private sphere，rental and online ride hailing，transportation in closed scenes，short-term transportation，urban sanitation，logistics and distribution. However，swapping mode still faces some problems in terms of standards and regulations，policies and systems，supervision and management，which shall be continuously explored and solved. This paper briefly reviews the development history of the swapping mode，systematically sorts out the development status of the swapping mode at the policy and industrial levels，studies and analyzes the difficulties and pain points existing in the development of the swapping mode and finally gives some suggestions for promoting the standardization of battery swapping，adjusting and improving management system，increasing support for the construction and operation of battery-swap stations and promoting the pilot work of the swapping model for new energy vehicles.