The three-dimensional expression is an important concept especially in sculpture area of the elementary art education. The sculpture expression in the elementary art education develops from the stage of horizontal symbol. to the three dimensional investigation and then to the three dimensional naturalism, Specially, the three-dimensional expression has a peculiar trait compared to the two-dimensional expressions, 1) The positive attitude of teachers is required. 2) Scientific concept should be applied sculpture education. 3) It. is important to teach differently the three-dimension from the two-dimension, 4) Sufficient facilities are required to fulfill an effective three-dimension instruction. 5) Children should have sufficient opportunity to discuss on their works and descriptive evaluation rather than gradiny is required.