A locking taper abutment with a weakened zone is disclosed, which includes a first portion, a second portion and a third portion. The first portion is used to be disposed inside an opening of a dental implant. The second portion connects to the first portion and has a structurally weakened zone to enable the possible fracture of the locking taper abutment to occur here. The third portion connects to the second portion and is used for joining with a dental prosthesis. After the locking taper abutment is fractured at the structurally weakened zone, the remained second portion protrudes from the opening. Therefore, the remained second portion can be directly taken out by an instrument so as to reduce the difficulty of clinical operation obviously. Furthermore, the opening wall of the dental implant will not be hurt, and the bacterial closure of the dental implant will not be destroyed.
