Pitching fine adjustment mechanism for puncture device and puncture device

The invention discloses a pitching fine adjustment mechanism for a puncture device, which comprises an adjusting seat fixedly arranged on a positioning puncture mechanism and at least one guide rail fixedly arranged on a frame for supporting the positioning puncture mechanism, and the axial direction of the guide rail is consistent with the pitching side of the puncture device. The adjusting base is arranged on the guide rails in a sliding mode, the adjusting unit is arranged on the frame and used for adjusting the relative position of the adjusting base and the guide rails, and at least one end of any guide rail is sleeved with a spring used for keeping the adjusting base balanced. The pitching fine-tuning mechanism provided by the invention can eliminate zero setting of the initial origin after the puncture mechanism is installed and eliminate installation errors, so that the direction of the initial positioning origin of the puncture device coincides with the vertical direction, it is ensured that the inst