A drill bit guiding device for dental implant surgery comprises a dental implant platform positioning ruler, a connecting fixing member and a drill bit guide. The dental implant platform positioning ruler is used to configure an ideal dental implant placement position on a tooth model.Then, the connecting fixing member is embedded into the dental implant platform positioning ruler, and a resin material connects extensions of the connecting fixing member to neighboring teeth on two sides of the dental implant position. Finally, the connecting fixing member and the resin material are removed and placed on an oral gum to be treated.Meanwhile, the drill bit guide is inserted into the connecting fixing member, so that a hole satisfying the ideal dental implant position and angle is drilled at the planned dental implant position through a through hole of the drill bit guide.