The injection needle for fairing which makes the operation thread for wrinkle removal insert by this invention is formed, in order to be able to insert in the human body, the point becoming pointed, the inside the operation thread length 0.8 - 10cm 1 or more is built in by the cylindrical fill section with the cavity, in the aforementioned operation thread it is formed the axis of the operation thread by standard symmetrically in the direction where many projection differs, the aforementioned projection moves aside the soft section organization of the skin, or, features that it possesses the role which expands epidermal tissue.本発明によるシワ除去用手術糸を挿入させる整形用注射針は、人体に挿入できるように先端が尖って形成され、中が空洞で円筒状の注入部に長さ0.8~10cmの手術糸が1本以上内蔵され、前記手術糸には多数の突起が異なった方向に手術糸の軸を基準に対称的に形成され、前記突起は皮膚の軟部組織を寄せるか又は、表皮組織を広げる役割を有することを特徴としている。