Falls often cause serious harm to the elderly, according to many statistical literatures that most of the elderly due to a fall, beside no one else can help, not immediately help, causing more serious injuries and even death. In this paper, we research and develop an intelligent fall detection system that can quickly and accurately determine the fall detection device for real - time detection fall among the elderly events. We use the three-axis accelerometer to obtain x, y, z direction acceleration values to determine the status of fall among the elderly. When the elderly fall occurs, intelligent fall detection system can detect immediate to reduce fall in the elderly the risk of injury and death.