The invention relates to a thin type self-control protector and a manufacturing method thereof. The thin type self-control protector at least comprises a ceramic substrate and conductive electrodes. The ceramic substrate is provided with conductive holes. The front surface and the back surface of the ceramic substrate are provided with the conductive electrodes. Connecting electrodes are perpendicularly arranged between the conductive electrodes of the front surface and the back surface. A main conductive loop is connected on the conductive electrodes so as to form a loop. The ceramic substrate is rectangular, and the middle positions of the four sides of the ceramic substrate are respectively provided with a slot. The positions, which are arranged at the slot positions, of the upper and lower surfaces of the ceramic substrate are respectively provided with front first, second, third and fourth conductive electrodes and back first, second, third and fourth conductive electrodes which are corresponding to the front positions. A heating layer is arranged on the two nonadjacent front conductive electrodes. An insulating layer is arranged on the heating layer. An electrode layer is arranged on the insulating layer. The electrode layer connects another two nonadjacent front conductive electrodes and then is connect with the main conductive loop so as to form back electricity.