Disclosed is a surgical hand drill which drills a hole into which a fixture is inserted during an implant procedure, wherein at the end of the hand drill is a circular hollow plate attached thereto and at the other end is a handle. The circular hollow plate has a concave part and a convex part, and a circular drill bit is inserted into the hollow plate, the circular drill bit having a flat surface corresponding to the concave and convex parts of the hollow plate so that the convex part of the hollow plate having the concave and convex parts is inserted into the flat surface of the circular drill bit, thereby preventing the circular drill bit from separating from the hand drill even when rotated in forward or reverse directions.
