The invention discloses a financial accounting reconciliation marking device, which comprises a reconciliation board, and is characterized in that the reconciliation board is inlaid with a fixing groove, the fixing groove is provided with an iron panel, the iron panel is made of No.45 steel, the iron panel is provided with a plurality of magnets, the inner wall of the fixing groove is provided with a moving mechanism, the moving mechanism includes a sliding slot I, and the sliding slot I is fixedly installed on the inner wall of the fixing groove. The financial accounting reconciliation marking device is provided with a marking mechanism and can be used after installing a marking pen of the marking mechanism in a connecting slot I, and financial invoices, etc. are aligned through moving the marking pen so as to facilitate reconciliation. In addition, fountain pens, etc. can be placed in a magnet placement groove so as to perform marking by using the fountain pens in the reconciliationprocess. The financial accounting reconciliation marking device is provided with a lighting mechanism, thereby being capable of lighting through a lighting lamp of the lighting mechanism, enabling thedevice to be stilled used in the case of poor light, and increasing the practicability of the device.