This study aims to analyze the breadth of the material history of Islamic civilization contained in Indonesian history textbooks for compulsory 10th grade in high school published by Erlangga. The results of the study show that: (1) the breadth of the material of the theory of entry and the development of religion and Islamic culture into Indonesia is quite good, this can be seen with the material presented about several theories of entry, and the influences of Islam in various fields of community life are good but the example presented cannot describe the full material content. (2) the breadth of material Development of people 's lives, government, and culture during the Islamic kingdoms in Indonesia has been extensive, this can be seen from the material presented regarding the kingdoms that cover most of the territory in Indonesia. However, the focus of the discussion was mostly still centered on palace life (royal environment) which resulted in studies of the conditions of social life of the people still not deeply touched.