The utility model relates to a kind of
diamond trimmer, include: substrate;At least one first
abrasive island, form in the one side of the substrate;And at least one protruding part, form in the one side of at least one first
abrasive island relative to the substrate, wherein: the substrate, the at least one first
abrasive island and the at least one protruding part are integrally formed, since omitting
assembly process in forming process, and avoid using
composite material or
metal material, thus can greatly improve manufacturing precision and prevent
pollution;In addition, the arrangement form of first abrasive island is various, after combining the protruding part of multiple shapes, can be adapted to the demand and use scene of various
grinding, and can ensure that
grinding fluid and
grinding debris can flow smoothly and
discharge in the process of
diamond trimmer rotation and sweeping.