The utility model discloses an outer wall decorative board, it wraps the veneer firmly to reach including the base member, the base member is the abatvoix, wraps veneer hem parcel firmly on the abatvoix to it is fixed with both by the flat nail, during the construction, it is actual according to the engineering, the base member size cuts, and wrap up, fix and wrap the veneer firmly, install at the building beyond the region of objective existence on the wall. The utility model provides a construction that outer wall decorative board was applicable to by a large scale, large batch outer wall wraps firmly, hard packet of traditional base member adopts deals difficult to understand, laminated wood board, 12 lis of boards, 9 lis of boards etc. Compares this application with hard packet of traditional matrix phase outer wall decorative board have and have the advantage that the roughness is high, the suitability is strong, it can the whole space of softening atmosphere, promotes the depth third dimension, has good application prospect in hard package construction.