Three-finger needling butterfly wing and injury-free needle

The three-finger acupuncture butterfly wing comprises a connecting part and wing pieces symmetrically arranged on the two sides of the connecting part, a needle hole used for installing a needle tube is formed in the front end of the connecting part, a connecting tube used for being connected with a catheter is arranged at the tail end of the connecting part, and the upper end face of the connecting part is a straight surface. The wing pieces on the two sides are bent upwards, a U-shaped containing groove is formed by the wing pieces and the upper end face of the connecting part, and the back faces of the two wing pieces and the upper end face form a three-finger pinching face. The butterfly wing formed by the connecting part and the wing panel is arranged, so that the U-shaped containing groove is formed between the wing panel and the connecting part when the wing panel is bent upwards, a user can press the upper end face of the connecting part with one finger and pinch the back face of the wing panel with t