It had been thought that pre-adolescent children could not develop depression. However, both clinical research and practice over the last three decades have proven that childhood depression is a real clinical entity sample. It has been reported that childhood depression may have serious consequences, such as suicide, low achievement, violence, and poor interpersonal relationships. A relationship between childhood and adult depression has also been demonstrated. This study reviewed the most salient findings relevant to the Inventory of Arabic Children's Depression (IACD). The scale contained 27 items using a scale ranging from alternatives rarely, sometimes, and often observed. Data were utilized, based on 15 studies of about 17,000 subjects in eight countries: Egypt, Kuwait, Saudi Arabia, Qatar, Bahrain, Syria, Jordan, and the U.S.The scale's reliability coefficient ranged from 0.81 to 0.93; criterion-related validity coefficient ranged from 0.39 to 0.83; and factor analyses disclosed clear, high-loaded, and interpretable components. Factor analyses proved good similarity between weak concentration, pessimism, sleep problems, unhappiness, weakness, and loneliness.