Venous indwelling needle of needling prevention connection structure

The utility model discloses a venous indwelling needle of a needling prevention connection structure. The venous indwelling needle of the needling prevention connection structure comprises a catheter seat, wherein the catheter seat is composed of a front pipe seat and a needling prevention pipe seat, the front pipe seat is provided with an L-shaped rotation clamp groove, the needling prevention pipe seat is provided with a positioning shaft sleeve which extends into an inner cavity of the front pipe seat, the positioning shaft sleeve is provided with a movable clamp strip, the movable clamp strip is provided with a bump and a clamp mouth, the clamp mouth is movably connected in the rotation clamp groove in penetration mode, and when a needle pipe is inserted into the catheter seat, the needle pipe is pressed against the bump, and the clamp mouth is limited in the rotation clamp groove, and furthermore when the needle pipe breaks away from the catheter seat, the clamp mouth of the movable clamp strip and the rotation clamp groove are in a relaxed state. The venous indwelling needle of the needling prevention connection structure has the advantages of causing no vibration and being simple and easy to operate in clamping, firmly clamping the clamp mouth with the rotation clamp groove due to the fact that the needle pipe is pressed against the bump, and smoothly separating the clamp mouth from the positioning clamp groove and directly separating the front pipe seat from the needling prevention pipe seat without need of rotation when the needle pipe is pulled out due to the fact that a face of the clamp mouth of the movable clamp strip, which faces the needling prevention pipe seat, is an inclined plane.