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 41 is embedded in a mockup 40 in a same orientation as the orientation of a fixture of an implant is to be embedded. A guide member 30 of a surgical guide 1 is fitted to a tooth portion of the mockup 40. An adjusting mechanism 20 adjusts such that an intersection line L made by plane-shaped red laser light beam H1 and green laser light beam H2 from line laser modules 11 and 12 is located on the first wire 41. The guide member 30 is removed from the tooth portion of the mockup 40, and fitted to a tooth portion in the mouth, and the orientation of a drill 50 is aligned with the intersection line L. Drilling operation is performed in the aligned condition.
