The utility model discloses a thermal insulation and fire retardant decoration board, include: insulation fire board plate body, the decoration panel, locate insulation fire board plate body on, the decoration panel include the panel body and with this body coupling of panel is used for providing anchor point's connecting piece, the panel body is including connecting the face and the right decorative cover with being connected the facial features, the connecting piece with the panel body bonds, open connection face one side of panel body has the first trough and second groove, the connecting piece have respectively with the first joint portion and the second joint portion of the first trough and second groove looks adaptation, the connecting piece partially do not imbeds through first joint portion and second joint the first trough with the second groove with panel body joint. The utility model provides a problem that easily drops of decoration panel.