The invention provides a method, device and system for optimizing a path of a shared bicycle, and relates to the field of vehicles. The system comprises a client and a sever; the client comprises a positioning circuit used for positioning a start position of the shared bicycle; a client data transmission circuit used for transmitting the start position to the server; and a display circuit used for displaying a travel path transmitted by the server; the server comprises a storage module used for storing map data of a preset region; a path planning circuit used for planning the travel path of the shared bicycle as a travel path whose repetition rate satisfies a preset condition in the preset region according to the start position of the shared bicycle and the map data; and a server data transmission circuit used for transmitting the travel path to the client. The system for optimizing the path of the shared bicycle provided by the invention can prevent users from getting lost in the preset region, and reduce the travel time of the users.