Abstract: The invention relates to a supporting apparatus for supporting an electric device in a car. The supporting apparatus comprises a plug having a front end and a rear end over which the front end of the plug being can be plugged into and fixed in an electric socket of the car, a flexible steel tube having two ends fixed to the rear end of the plug and the electric device separately, a plurality of flexible steel wire ropes each having two ends fixed to the rear end of the plug and the electric device separately, the plurality of steel wire ropes being positioned separately at two sides of the steel tube for strengthening the steel tube, and an electric wire installed in the steel tube for electrically connecting the electric device to the plug. When a user bends or rotates the supporting apparatus, the steel tube and steel wire ropes of the supporting apparatus will be flexibly bent or rotated and the electric device will be approximately maintained at the bent or rotated position.