Abstract: A diamond blade having a rim type cutting tip for an apparatus such as cutting saw machine having a structure which rim type cutting tip is able to produce cutting chips with relative large size during the cutting operation so that those chips are easily discharged outside with reducing the friction with the rim type cutting tip of the diamond blade, thereby it increases cutting ability and prevents the chips from dispersing in the air and from causing the bad affects to user's health and the contamination of environment. The diamond blade comprises a wheel body and a rim type cutting tip for cutting or grinding workpieces, which is disposed on the circumference of the wheel body.