Improved structure of earing-aperture punch

The utility model relates to an improved structure for a piercing gun. The utility model mainly comprises a gun handle, wherein the gun handle is provided with a press handle connected with ear clipping seat, the gun handle and the ear clipping seat are provided with a wedge slot at an opposite side of an ear clipping position for wedging a needle sleeve seat and an ear needle seat, a pull handle is arranged in the gun handle to be connected with a telescopic rod, the telescopic rod is held against by an elastic component, an actuating element is contained in the gun handle to be clipped and positioned during straining the telescopic rod, the telescopic rod is aligning to an ear needle, so that the ear needle seat closes with an ear firstly, then the press handle is pressed for the needle sleeve seat clipping the ear, the pressing operation is detached form the clipping position of the telescopic rod, the telescopic rod is popped up by the elasticity of the elastic component, and drives the corresponding ear