The purpose of this paper is to focus on the social causes of terrorists' behaviors and actions originated in the Arab society. It composes all social causes of terrorist acts whether it occurred in the Arab society or abroad as well. Moreover, it calls attention to the people in risk of becoming terrorism. This paper suggests that social causes of the terrorism in the Arab Society can be attributed to two major social deficits in the Arabs life: 1. Human development deficit within and between Arab societies, including but not limited to freedom deficit, knowledge deficit and the empowerment deficit, 2. Human security deficit (such as personal, environmental, economic, and political, community, and health and food security) in the Arab society. Terrorism can be seen as a social product of mutual interaction within societies (i.e., repression; inequalities, tortures; and violation of human rights…etc) and between societies (i.e., ignorance of the free world, support of the dictatorship, and monarchial regimes etc.) of these two deficits. Terrorism is the result of the failure to free people from fear and want within and between Arab societies and between Arab societies. The current social tension situation in the Arab society will open the social system to many changing forces which produce an unstable society with a countless number of angry people and terrorists. Those oppressed youth people will turn to violence and terrorism and do everything at their disposal to vent out their anger and frustration at these social systems.