The present invention discloses a navigation method for electric vehicles based on electricity quantity guidance of energy-storage charging piles. The electric vehicles select charging piles nearby that can meet own charging quantity demands to charge according to location information of charging piles and real-time stored electricity information of energy storage modules of the charging piles; a system using the method includes the charging piles. The navigation method and system can reasonably guide the electric vehicles to charge according to the distribution and the stored electricity of the charging piles, and can dynamically plan travel charging solutions for the electric vehicles, thereby avoiding problems that the electric vehicles stop running without electricity on the way to the charging piles and inefficiently wait for charging for a long time, so that the stored electricity of the charging piles can be reasonably distributed and utilized, and energy idleness and waste are avoided.