A carrier and a pressing device for attaching a panel to a casing are disclosed. The carrier includes a carrier main body; a carrier plate; a plurality elastic components; and a supporting component. The carrier plate is configured to carry the panel. The supporting component is connected to the carrier main body and the carrier plate to be a pivot for the carrier plate to rotate around the carrier main body. Each of the elastic components is connected to the carrier plate and the carrier main body, such that the carrier plate may restore upon having force applied thereon and tilt, so as to be adapted to the different sizes of the panel and the casing. Therefore, the panel is completely attached to the casing, and the attachment of the panel and the casing is thus effectively improved.