Computer, replacement structure and replaced storage device

The utility model relates to a computer, a replacement structure and a replaced storage device. The replacement structure comprises a fixed frame body, an exit button, a control part and a long push part, wherein the fixed frame body is fixed on the inner portion of the computer, and a CD-ROM player is arranged in the fixed frame body, the CD-ROM player is connected with a connector, and the connector is also fixed in the fixed frame body, the control part is connected with the exit button, a user can move the control part when presses the exit button, the long push part is fixed on the fixed frame body through a first column body, when the control part is moved, one end of the long push part is pushed simultaneously, the CD-ROM player is pushed by the other end of the long push part simultaneously with the first column body as a rotating shaft, and thus the CD-ROM player is separated from the connector and released from the fixed frame body.