The present invention discloses a side grinding drill including a continuously variable angle portion, and the side grinding drill including the continuously variable angle portion includes a tube body part and a grinding head disposed at a front end of the tube body part. The grinding head configured to be driven to tilt and rotate about its own axis, wherein the distal end of the grinding head is circumferentially connected to the inner tube body in a transmitting manner. Articulated along, a flexible transmission is located at least at the front end of the inner tube body, and the flexible transmission is configured to be articulated to the distal end of the grinding head to transmit torque It is comprised by this. The side grinding drill including the continuously variable angle portion of the present invention adopts a directly articulated configuration to transmit the transmission between the inner tube body and the grinding head, and can perform the tilting operation. A flexible transmission arrangement is used to compensate for off-axis caused by tilt and drive. Since the transmission configuration is simple and the transmission cycle is short, it promotes stable control and improves the efficiency of the operation. Furthermore, in the configuration in which the grinding head can be adjusted to both the tilt and the circumferential position, it is possible to freely adjust the direction of the grinding head. This is highly adaptable to the surgical position, with high accuracy to improve the efficiency of the operation of the surgery, reducing postoperative recovery time and reducing patient pain Reduce treatment costs. [Selection] Figure 1本発明は連続可変角度部を含む側方研削ドリルを開示して、前記連続可変角度部を含む側方研削ドリルは、チューブ本体部品と、前記チューブ本体部品の前端に配置されている研削ヘッドであって、自身の軸周りに傾斜及び回転するように駆動されるように構成されている前記研削ヘッドと、を含み、伝達する形態で前記研削ヘッドの末端は前記内側チューブ本体に円周方向に沿って関節でつながれて、柔軟な伝達部は少なくとも前記内側チューブ本体の前端に配置されて、前記柔軟な伝達部は前記研削ヘッドの前記末端に関節でつながれるように構成されてトルクを伝達可能に構成されることを特徴とする。本発明の連続可変角度部を含む側方研削ドリルは直接関節でつながれた構成を採用して、内側チューブ本体及び
