An intelligent vehicle load measuring system includes a sensor installed in the shock-absorber of every wheel of a vehicle to detect the extension length data of the associating shock-absorber when the vehicle carries a load, a calculation unit coupled to the sensors to receive the extension length data of every shock-absorber of the vehicle and to calculate the weight of the load received by each shock-absorber and the total weight and loadage of the vehicle, and a display unit electrically coupled to the calculation unit to display the load data of the vehicle. The invention involves also an intelligent vehicle load measuring method.