The invention discloses a kind of HP lining plate of coal grinder, belong to wear-resistant liner field.The chemical composition mass percent of liner plate of the present invention is:C0.5~0.6%, Al1.3~1.9%, Mn0.8~1.1%, Cr9.0~11.2%, Mo2.6~3.0%, V0.1~0.3%, Co6~7%, Re0.25~0.35%, surplus is Fe and inevitable impurity, wherein Cr/Co=1~1.6, …