The invention discloses a CD driver cassette structure, including a frame provided around the cassette and a protection plate thinner than the frame and at the center of the frame. The protection plate is a ladder-shaped plane, and the upper is a protruding plane in the same thickness as the frame, and the lower is a groove plane. The protruding and groove planes are connected with each other through an inclined arc, and an installation groove is arranged in the groove plane. The installation groove consists of a round hole and a bar hole. The round hole is close to the end of the protection plate, and the bar hole extends to the other end of the protection plate along radial direction of the round hole. The groove plane has the same thickness as the frame, and then shrinks to a first thickness after a sudden shrinkage. And then, the even inclination shrinks from the first thickness to the second thickness, and then to the thickness of the frame from the second thickness along the inclined arc, thus making the cassette molded once for all.