Shoe pad with breathable purification function

The utility model relates to a shoe pad with breathable purification function. The shoe pad with breathable purification function comprises a shoe pad body made of polyurethane through foam forming; a breathable purification device is arranged inside the shoe pad body; the breathable purification device comprises air bags and air pipes which are communicated with each other; the air bags are located in the foot arch position of the shoe pad body; the air pipes are located in the front sole of the shoe pad body; front portions of the air pipes are communicated with a plurality of air holes on the surface of the shoe pad body; the rear portions of the air pipes are communicated with the air bags; the breathable flow of air inside the shoe and the surface purification of the shoe pad are achieved by pressing the air bags with force from feet in walking. The air bags are flat elliptical cavities made of an ABS material. The shoe pad with breathable purification function is simple and reasonable in structure, is able to continuously press the air bags with the force from feet in walking, so as to generate an air flow inside the shoe and purify the shoe pad surface; the shoe pad has a breathable purification function; and the feel of wearing the shoe pad is nice and cool and comfortable.