The utility model discloses a smart electric meter case with reminding device, including box, the electric room of meter door, inlet wire room door, switch gear room's door, glass window, electromagnetic lock, hinge, wireless communication device, the protector of surging, shunt release, circuit breaker and wiring mouth, be provided with the cross slab on the box and erect the baffle, erect the baffle and count electric room gate open and cross hinge cooperation installation, hinge cooperation installation is crossed to box and inlet wire room door, switch gear room's gate open, be provided with the display screen in the box, reply button and cardholder, erect that baffle left part cross slab upper portion is provided with wireless communication device, the protector of surging, shunt release and wiring mouth, it is provided with a plurality of glass windows on the door of electric room to count. In the use, can when the charges of electricity are about to exhaust, send warning information at any time through cell -phone inquiry electric quantity in service behavior, make the user in time pay the charges of electricity, avoid electroless available.