The present invention discloses a hook prevention device for fishing needles that can stably support load and wind pressure of windows and doors to increase condensation prevention, heat insulation effect, and productivity and work efficiency. The hooking device for fishing hooks of the present invention supports the lower portion of the window frame extending to the upper side and the inner side of the outer wall on which the window frame constituting the window is seated, and is grounded on the vertical side of the inner side of the outer wall. A bracket and a second bracket having a '-' shape, wherein the first bracket is made of a synthetic resin material for thermal insulation; The vertical part and the horizontal part of the second bracket are punched with a metal material to support the weight and wind pressure of the window while contacting the inner part of the vertical part and the horizontal part of the first bracket, which are in contact with the vertical surface of the lower wall and the outer wall of the window frame extending to the interior side. And bending processing; A pair of body integrally formed in the first bracket and the second bracket in a diagonal direction to integrally form a body for increasing the durability while supporting the weight of the window and a vertical fixing piece and a horizontal fixing piece that are bent at both upper and lower ends of the body; A reinforcing member is provided; Align the vertical and horizontal portions of the first bracket or the vertical and horizontal portions of the second bracket with the through holes or the screw holes formed in the vertical fixing piece and the horizontal fixing piece of the reinforcing member, and then, It is characterized in that it is made to be combined.본 발명은 창호의 하중 및 풍압을 안정적으로 지지하면서 결로방지, 단열효과 및 생산성과 작업 효율성을 증대시킬 수 있도록 한 낚시바늘용 밑걸림 방지구을 개시된다.본 발명의 낚시바늘용 밑걸림 방지구은 창호를 구성하는 창틀이 안착되는 외벽의 상부 및 실내측으로 연장된 창틀의 폭방향 일측 하부를 지지하고 외벽의 실내측 수직면에 접지되는 'T'자 형상의 제1 브래킷 및 'ㄱ'자 형상의 제2 브래킷을