Each geographical area throughout Iran has its own geographical and geopolitical conditions and mechanisms. By being aware of the weaknesses and strengths of a region, its security and defense coefficient is increased in order to maintain territorial integrity and confront foreign invasions and passive defense. According to the studies conducted in this study, it was determined that geographic information systems and remote sensing are among the most important tools necessary in defense and security planning. Despite the geomorphological conditions suitable for establishing defensive security and passive defense in the region, it is still necessary to implement some security measures to increase the security coefficient of the Bushehr coast in terms of passive defense. Based on regional visits, it was determined that the presence of sand dunes, river swamps, and mudflats are among the most important obstacles in the region that act as obstacles to the enemy's offensive movements. On the other hand, the lack of major population areas in the region, security facilities, especially in the lower reaches of the Mond River, the presence of numerous sinkholes on the low-lying coast, and deep valleys in the Mond and Dayer ranges have turned this region into a strategic and sensitive area that It requires attention and implementation of security defense measures.