In recent years, the reduction of the earth’s available resources has restricted social development, and domestic energy de- mand is far greater than energy production. In order to change the single mode of energy and accelerate the transformation of the en- ergy system, China's electric vehicle industry develops rapidly and the number of electric vehicles increases significantly. But the in- frastructure of electric cars including charging and monitoring is still lagging behind. Combining electric vehicles with "Internet +" to form NB-IoT electric vehicle operation management system can expand its development prospects in the consumption of renew- able energy and energy storage, break through the limitations of current development of electric vehicles, and make great achieve- ments in charging management, remote monitoring and rental charge of electric vehicles.