The invention discloses a bearing lubricating nozzle dismantling method which comprises the following steps: A, adopting an adhesive tape to paste and shield a nozzle, providing a process block, and pasting the bottom surface of the process block with the nozzle; B, separating the nozzle from a bearing pedestal, and dismantling the nozzle from a casing; and C, separating the process block and thenozzle, cleaning residual glue and a glue stripper from the nozzle, and finally, dismantling the protective adhesive tape on the nozzle to finish dismantling of the nozzle. According to the bearing lubricating nozzle dismantling method, impact, collision and scratch caused by knocking during the existing nozzle dismantling process are avoided, and unnecessary scrap caused by deformation of an oilspraying hole is eliminated. The invention further provides a device for the bearing lubricating nozzle dismantling method. The device is simple in structure and convenient to use, improves the dismantling efficiency and lowers the labor intensity in a duplication manner.