Vibration impact tool for well repair

The utility model belongs to the technical field of underground well repair tools, and particularly relates to a vibration impact tool for well repair, which comprises a shell, a mandrel is rotationally assembled in the shell, and the lower end of the mandrel is connected with an impact hammer through a spline, so that the impact hammer and the mandrel are assembled together in an axial relative sliding and circumferential relative rotation stopping manner; a spiral blade is arranged on the peripheral surface of the core shaft, and the spiral blade rotates after being impacted by liquid flowing through the tubular column so as to drive the core shaft and the punch hammer to rotate; protrusions are arranged at the bottom end of the punch hammer and the top end of the lower connector, a lower inclined face extending in the circumferential direction is arranged on the protrusion on the lower connector, and when the punch hammer rotates, the protrusion at the bottom end of the punch hammer is matched with the low