Anti-needling device capable of avoiding false triggering

The utility model discloses an anti-needling device avoiding false triggering, which comprises a sleeve, an elastic sheet and a puncture needle, the puncture needle comprises a needle head, a strip-shaped groove is arranged on the peripheral surface of one end, close to the needle head, of the puncture needle, the elastic sheet is mounted in a cavity, the puncture needle penetrates through the elastic sheet and selectively extends out of the sleeve through a through hole at the top of the cavity, and the sleeve is sleeved with the elastic sheet. The elastic piece comprises a supporting part, an abutting arm and a guiding arm, the guiding arm comprises a first guiding part and a second guiding part, the second guiding part is bent upwards to form a locking part, the abutting arm is obliquely arranged in the direction of the guiding arm and elastically abuts against the peripheral face of the puncture needle, a base is arranged at the bottom of the sleeve, and the elastic piece is arranged on the base. A limiti