The study aimed at identifying the extent to which Islamic education textbooks of post-basic education in both academic semesters in Oman, include healthy concepts related to self-preservation as one of the Islamic law objectives by answering the following questions: 1. To what extent does the content of the two Islamic education textbooks of post-basic education in Oman include concepts of healthy education related to self-preservation? 2. Considering the school grade, how are the concepts of healthy education of self-preservation distributed according to their frequency in the content of the two Islamic education textbooks of post-basic education in Oman 3. Considering the six areas of healthy education, how are the concepts of healthy education of self-preservation distributed according to their frequency in the content of the two Islamic education textbooks of post-basic education in Oman? To achieve the study aims, the researcher followed the descriptive and analytical approach, and prepared a list of (37) healthy concepts related to self-preservation. The validity of the list was verified by presenting it to a group of (22) arbitrators, and transforming it into an analysis card to reveal the extent to which the targeted content include those concepts. The stability was (0.82). After application and data collection, the researcher statistically analyzed the data, and reached several results, the most important of which are:  The concept of (social communication) obtained the highest frequency in the two target approaches.  The Islamic education textbook of the 11th grade contained the largest number of frequencies compared to the 12th grade.  (Psychological health) was at the first rank among six areas of health education. Based on the study findings, it is recommended to focus on concepts that were less available during the curriculum development, and that concepts of healthy education related to self-preservation should be included in Islamic education textbooks for post-basic education. The researcher suggested conducting a study that aims at identifying the extent to which post-basic education students acquire the concepts of healthy education included in this study.