To solve the problem of high vibration and severe wear when milling superalloy thin-walled workpiece, the influence of different coating systems on milling tools was studied. AlTiN/TiAlN, AlCrN/TiAlN and TiSiN/TiAlN double-layer coatings were deposited on the carbide tools by arc ion plating. The morphology and mechanical properties of three coatings were characterized by scanning electron microscope, nano indentation instrument and micron scratch instrument. Milling tests of coated tools were carried out on a high-performance milling machine. The tool wear condition and cutting forces were collected, and the performance of different coatings during milling was analyzed. The results show that TiSiN/TiAlN coating has the highest hardness and wear resistance factor, and the wear of flank surface is the smallest after 24 m of milling, but the coating is easy to bond with the superalloy. Compared with TiSiN/TiAlN, the hardness and wear resistance factor of AlCrN/TiAlN coating are smaller, and the tool is close to failure after 24 m of milling, but the bond with superalloy is not so serious; AlTiN/TiAlN coating has the smallest hardness and wear resistance factor, and the most severe wear condition. The tool has failed after milling of 12 m, but the bond between the coating and the superalloy is the slightest. Therefore, coating with higher hardness and wear resistance factor can effectively reduce the wear of the tool when milling superalloys and prolong tool life.