To provide a method for polishing a sample for observing metal texture where an inclusion and/or a deposit can be identified more clearly and stably than before.

In the method for polishing a sample for observing metal texture, when finishing polishing is to be made to the sample for observing metal texture after the rough polishing of the surface by a polishing machine, polishing sagging is generated at the boundary between an including and/or a deposit existing in the sample and a foundation metal. In this case, the polishing machine is set to a vibration type, and at the same time a solvent where alumina powder is mixed as an abrasive is used, or the polishing time is preferably set to 20-120 minutes.