The followings are criteria of the proper textbook in the age of cyber-education. First, all the contents teachers want to teach must be found in the course of doing the computer and be used through the downloading. Second, all the contents students want to learn must be found in the course of doing the computer and help students` learning. There are seven or eight Chinese Letters textbooks for the middle school students in the sixth Education Curriculum and each textbook has different contents. But it is difficult for students to study different contents of these textbooks together. So the Chinese Letters textbook for the middle school students in the age of cyber-education must be made to solve this difficulty. Also the textbook can be best if all the contents are found and used in the course of using the Internet at any time. To make the proper Chinese Letters textbook for the middle school students in the age of cyber-education, we need many other teachers` help. We hope teachers to hold their good teaching materials in common through the Internet.