The invention relates to a mobile phone APP vehicle information obtaining system and load balancing method and vehicle renting method. The mobile phone APP vehicle information obtaining system includes a mobile phone leasing APP, a network management platform, a sub service module and an electric automobile terminal controller, wherein the network management platform includes a member authentication service, a heartbeat and message pushing service, an APP service group and a member login status database, and the electric automobile terminal controller includes a leasing business module, an information interaction module, a vehicle returning module, a vehicle query and reserving module, a vehicle position function module, a vehicle state information function module and a charging pile query and reserving module. The mobile phone APP vehicle information obtaining system shares access pressure of mobile phone APP members and electric automobiles to different APP services and sub services through a sub service load balancer and an APP service load balancer, thereby achieving the purpose of load balancing and communication failover, and reducing system access pressure. Vehicle renting, vehicle returning, recording, accounting, charging and the like are completed in a self-help manner, and both time and labor are saved.