The utility model relates to a power grid enterprise electronic invoice weight checking device. The utility model belongs to the technical field of power grid enterprise electronic invoices. The device comprises a scanning base internally provided with a scanner, the scanning window is formed in the scanning base and enables the scanner to scan the two-dimensional code and the bar code on the electronic invoice through signals, and the top of the scanning base is provided with a display which displays the information of the electronic invoice after the scanning base scans the two-dimensional code and the bar code on the electronic invoice when the scanning base is aligned with the scanning window and is powered by an external power supply; according to the utility model, the related structures are matched for use; firstly, a scanning window is arranged; an electronic invoice is placed on the scanning window; the scanning base provided with the scanner can scan a two-dimensional code and a bar code on an electronic invoice, scanned electronic invoice information is sent to the display screen through signal connection with the display screen, then the electronic invoice information displayed on the display screen is compared with the database unit, and whether the situation of repeated reimbursement exists or not is judged.