The paper introduces the mare properties and characteristic of ultra-high molecular weight polyethylene plastic liner that replace high manganese steel of ball mill and the installation method. It also discusses the application of this plastic liner alnong mining machinery equipment and its developing prospect[Descriptnrs]Ball mill Ultra-High molecular weight Polyethylene Liner The paper introduces the mare properties and characteristic of ultra-high molecular weight polyethylene plastic liner that replace high manganese steel of ball mill and the installation method. It also discusses the application of this plastic liner alnong mining machinery equipment and its developing prospect [Descriptnrs] Ball mill Ultra-High molecular weight Polyethylene Liner