Absorbable metal closing nail in body and of three-dimensional structure and forming method thereof

The invention provides an absorbable metal closing nail in a body and of a three-dimensional structure and a forming method thereof. The closing nail is of a U-type structure before being formed and is of a three-dimensional double-B-type or three-dimensional O-type or three-dimensional double-O-type structure after being formed. The closing nail guarantees closing sealing of tissue, is beneficial for tissue blood supply and shortens wound healing time and rehabilitation time of a patient. According to the absorbable metal closing nail, the nail can be absorbed by the body automatically after an operation wound is healed, has no residues, has no foreign body reactions or other adverse influences and has good biocompatibility.