The invention discloses a building external wall furring brick decorative plate. Currently, external wall decorative plate researches are focused on functional respective of thermal insulation, crack resistance, flame prevention, and the like. However, the decorative function, except change in color, is not shown. According to the invention, glass fiber mesh cloth or synthetic fiber non-woven fabric cloth is adopted as an enhancing mesh cloth; cement mortar, re-dispersible powder or alkali-resistant elastic latex, synthetic staple fiber, and cellulose ether are prepared into a composite slurry; the slurry is pressed into a base blank; and furring tiles are adhered to the base blank, such that the furring brick decorative plate is prepared. According to the invention, the adhesion work for adhering small tiles on the external wall is changed into the adhesion work of large plates, such that operation is simplified. The decorative plate has the advantages of a decorative plate. Also, tiles of different patterns, colors, and sizes can be adhered, such that appearance and practicality are both taken into consideration. The base blank is prepared by using the composite slurry and the enhancing mesh cloth, such that the decorative plate has excellent crack resistance, tensile resistance, and light weight in the physical respect.