A dental implant surgical guide includes an upper guide member including a tooth mold and a plurality of first mating connector components, an intermediate guide member including a guide portion, a plurality of first connection portions and a plurality of second mating connector components, and a lower guide member including a body having a downward-facing recess, a plurality of second connection portions located on the top side of the body, a support bar having two opposite ends thereof respectively connected to the body at two predetermined locations and a mounting portion formed on the body.