The invention provides a press key structure comprising a press key body, a metal spring and a soft board, wherein the soft board is arranged between the press key body and the metal spring, the soft board is provided with a plurality of switch units and a plurality of earth points, the switch units are arranged correspondingly to the metal spring, and the earth points are connected with the press key body. The press key structure also includes a thin film layer which includes a surface facing the press key body. A groove is arranged on the surface, thus a groove bottom wall is formed on the thin film layer. The metal spring is housed in the groove, and is bonded on the groove bottom wall.