To provide a beauty polishing machine capable of grinding horn and nails easily while grasping with one hand and efficiently collecting pieces such as horny or the like during polishing. A polishing roller body (21) for polishing a horny skin surface or a nail, comprising: a polishing roller body (21) having a substantially columnar shape and having a polishing surface on at least a part of an outer peripheral surface thereof a polishing roller body A suction means (30) for sucking a horny or the like piece polished by the polishing roller body (21), and a dust collection means (40) for collecting the sucked corner matter etc.片手で容易に把持しながら角質や爪を研磨することができ、研磨時の角質等片を効率良く集塵可能な美容研磨機を提供すること。 角質皮膚面又は爪を研磨する美容研磨機(1)であって、略円柱状で外周面の少なくとも一部に研磨面を有する研磨ローラー体(21)と、研磨ローラー体(21)を回転駆動する回転手段(23)と、研磨ローラー体(21)により研磨された角質等片を吸引する吸引手段(30)と、吸引された該角質等片を集塵する集塵手段(40)とを備える。