There are two major curricula concepts of computer education. One is a kind of tool based curriculum that could enhance the quality of instruction and learning, such as, information and communication technology(ICT) in education, computer education as a tool, or computer/web based education. The other is a kind of content based curriculum that could handle what computer is and/or how computer works. This is so called \'computer science education\'. Because information technology has changed very rapidly and the related research is not enough, there have always been some gaps between theory and practice. When we carefully investigate the current curriculum of computer education, professionally organized contents in computer and network theory are used in elementary school. We need to re-organize the contents which is adequate to children. This situation implies it is very necessary to analyze current curriculum and setup a direction of computer education based theoretical approach in information processing area. Therefore, the main purpose of the study was to find out what computer curriculum should be changed and organized for elementary school teachers as well as students in computer education. The concept of computer education was summarized. The study surveyed and analyzed interdisciplinary subject areas related computer education, such as, computer science, information science, and cognitive science, etc.