Printer paper way structure and RFID label printer

The invention relates to a printer paper way structure and an RFID label printer. The printer paper way structure comprises a sensor installation frame, a central frame and a paper pressing device, and a passageway between the sensor installation frame and the central frame is a paper feeding passageway. The paper pressing device is installed on the sensor installation frame, is used for contracting and expanding along with the thickness of label paper in the paper feeding passageway, and abuts against the label paper. The paper pressing device abuts against the label paper so that the label paper can be tightly pressed by the paper pressing device, then the label paper does not shake in the paper feeding passageway, and then the label paper can be conveniently positioned through positioning sensors installed in the sensor support and the central frame. On the other hand, due to the fact that the paper pressing device can contract and expand along with the thickness of the label paper in the paper feeding pas