The invention discloses a cutter frame structure for thermally cutting multiple layers of raw ceramic pieces, and solves the problems of long blade change time and difficult accurate positioning in blade installation in a traditional multi-layer raw ceramic piece thermal cutting device. A blade installation positioning step (2) is arranged between the front side surface of an I type tool bit frame(1) and the lower bottom surface; an absorption blade strip groove (27) is formed in a vertical surface of the blade installation positioning step (2), and communicates with a vacuum sucking mouth (10) arranged on the left side surface of the I type tool bit frame (1) through an absorbing hole formed in the bottom of the groove; a blade (3) is arranged on the vertical surface of the blade installation positioning step (2); the upper top surface of the blade (3) abuts against a horizontal surface of the blade installation positioning step (2); and an L type pressing plate (4) is pressed on thefront side surface of the blade (3). The structure guarantees the machining precision and performance of the multiple layers of raw ceramic pieces.