The present invention relates to a locking taper type abutment having a weakened section, comprising a first part, a second part and a third part. The first part is placed in an opening of a tooth implant. The second part is connected to the first part and has a structural weakened section so that the fracture of the locking taper type abutment most likely occurs at the structural weakened section. The third part is connected to the second part so as to connect a prosthesis. With the structural weakened section, the fracture of the locking taper type abutment most likely occurs herein, the residual second part protrudes from the opening of the tooth implant after the fracture occurs. The residual second part can be directly clamped by a device, thus substantially decreasing the difficulty in clinical practice. In addition, it neither makes harm to the bore wall of the tooth implant, nor destroys the bacterial sealing characteristics of the tooth implant.
