Electric energy metering device with connector

The utility model discloses an electric energy metering device with a connector. The display device comprises an upper shell, a lower shell, a control circuit board and a display panel carrying a display screen, the control circuit board and the display board are positioned in an accommodating cavity formed between the upper shell and the lower shell; the display panel is positioned above the control circuit board and is electrically connected with the control circuit board through a pin header; wherein the lower shell is internally provided with two wiring units which are oppositely arranged,the bottom surface of the lower shell is provided with a guide rail groove and at least two card grooves which are vertically communicated with the guide rail groove, the upper surface and the lowersurface of the card are respectively provided with a connecting column, one end of the card, which is close to the guide rail groove, is provided with an arc-shaped abutting part, and the arc-shaped abutting part extends into