Provided is a surgical guide that enables a dentist to visually identify the tip of a drill during dental implant treatment, and does not allow the drill to tilt more than necessary, and enables sufficient cooling water to be provided so as not to cause bone burns, and is compatible with several different types of drills having different diameters. A first wire is embedded in a mockup in a same orientation as the orientation of a fixture of an implant is to be embedded. A guide member of a surgical guide is fitted to a tooth portion of the mockup. An adjusting mechanism adjusts such that an intersection line made by plane-shaped red laser light beam and green laser light beam from line laser modules is located on the first wire. The guide member is removed from the tooth portion of the mockup, and fitted to a tooth portion in the mouth, and the orientation of a drill is aligned with the intersection line. Drilling operation is performed in the aligned condition.
