“Internet$+$transportation” mode has produced a series of new industry models, which a subversive change to the urban traffic mode, and especially promotes the electric vehicle(EV)'s car-sharing growth under the background of Internet tailored taxi. Aiming at the interaction among the stations, consumers and fleets, which are the main objects in the EV's car-sharing system, according to the basic idea of multi agents simulation, this paper proceeds to assess the operation capacity by the analysis of the average utilization rate, average idle rate and consumer satisfaction rate and taking Beijing's eHi car as an example, and explores the impact of fleet size and parking capacity on profit and compares between the consumer and faculty's drop-off modes. Finally, the simulation model of car sharing is implemented on the Anylogic platform.