This study is done to compare and to analyze middle school Informatics textbooks developed according to 2007 revised national curriculum. In this paper, suggestions are made for improvement on Informatics textbooks. Textbooks were analyzed based on two criteria, in framework and content, and collected data were analyzed according to Content Analysis method. As a result of analysis, a framework of textbooks showed differences in the entire construction, discipline-specific weight, content developing structure, and types of assessment, and content of textbooks showed differences in the concepts and the kinds of programming language. Six improvements in developing Informatics textbook from the results of content analysis were suggested and this will be helpful in developing the Infomatics textbook in the future.