The utility model discloses a narrow face copper plate for a multidimensional chamfered crystallizer. An angle of inclination Alpha between a second area and a third area is confined in a range from 30 degrees to 75 degrees; an angle of inclination Beta between the first area and a third area is confined in a range from 20 degrees to 70 degrees. In addition, a distance L from the vertex of a first arc transition to the side of a narrow face is confined to be 3%-30% of the overall length of the narrow face; a distance L1 from the vertex of a second arc transition to the side of the narrow face is confined to be 1%-25% of the overall length of the narrow face, and accordingly, cooling of a junction of a chamfer area of a casting and a plane area thereof is improved; solidification uniformity of the chamfered part of a housing of the casting is enhanced, and longitudinal cracks of corners of the casting are effectively controlled.