The invention discloses an atomizing nozzle for a bearing cleaning line. The atomizing nozzle comprises a nozzle core, a nozzle casing and an air tap. A threaded base is arranged at the front end of the nozzle core. The nozzle casing is movably connected to the threaded base in a threaded mode, and a liquid mixing cavity is formed in the nozzle casing. The nozzle casing is provided with a horn-shaped nozzle hole. The nozzle core is provided with a liquid inlet hole and an air inlet hole. The liquid inlet hole is communicated with the liquid mixing cavity. The air inlet hole extends into the liquid mixing cavity through an air channel. The air tap is installed at the tail end of the air channel and arranged in the nozzle hole. The front end of the air tap is constructed to be in the shape of a horn matched with the nozzle hole. The atomizing nozzle for the bearing cleaning line is simple in structure; and the flow of the nozzle can be adjusted conveniently, the flow magnitude of the nozzle can be changed in the using process according to practical situations of workpieces. Thus, the using requirements of different workpieces are met so that a better oiling effect can be achieved.