The Al/hBN abradable seal coating is mainly used on the wall of the stator casing of the medium and low pressure compressor of aero-engine. Previous studies have found that the addition of dendritic Cu to Al/hBN powder reduces the hBN burn-off ratio in the as-deposited coating, the distribution of non-metallic components is more uniform, and the abradability of the coating is higher. This paper aims to further analyze the effect of powder hBN content on the wear performance of CuAl/hBN wear-resistant seal coating at 450 ℃ based on this research. The adopted methods include:using atmospheric plasma spraying process to prepare CuAl/hBN coatings with hBN content of 10%, 15%, 20% and 25%, respectively. The Rockwell hardness of the spray coating surface is characterized by the QUALITEST Surface Rockwell hardness tester. Using the high temperature friction and wear testing machine produced by Bruker, and setting a constant axial load, the wear morphology and mass wear ratio of the coating and the friction pair under the condition of low linear speed and 450 ℃ were studied and analyzed. Theoretical mechanism of coating wear behavior.