The invention discloses a vehicle state and electric quantity threshold value monitoring method. Automobile rental platform information is updated in real time through monitoring of the vehicle state,meanwhile, the vehicle operation state is known in real time through monitoring of a vehicle electric quantity threshold value, and the use safe reliability of a vehicle is guaranteed. The method specifically includes the following content of (a), a vehicle reservation state monitoring method, (b), a vehicle rental state monitoring method, (c), a vehicle offline state monitoring method, (d), a vehicle idle state monitoring method, (e), a vehicle operation and maintenance state monitoring method and (f) a vehicle electricity lack threshold value monitoring method. The method has the beneficialeffects that the vehicle state and the electric quantity threshold value state can be monitored in real time, the vehicle can be quickly and effectively put into an automobile rental system, and therefore automobile rental efficiency is improved.