The "Information and Communication Technology Education Guidelines" were revised in December, 2005. However, the revised guidelines are not propagated in the elementary school. One of the reasons is that the textbook is not faithful to the revised guidelines. We analyzed the elementary computer textbooks published on and after June 2006. In the result, the contents of many textbooks are not based on the "Information and Communication Technology Education Revised Guidelines". Especially, "Understanding of the Information Processing" and "Comprehensive Activities" areas are not faithful to the revised guidelines. Therefore, the systematization of the textbook screening system, participation of the computer education expert, development of the detailed curriculums, and training of the elementary teachers are essentials for invigorating of the elementary computer education.