The 4G LTE elderly person GPS Tracker is a wearable device based on Internet of Things technology, designed specifically for the elderly population. The 4G LTE elderly person GPS Tracker integrates three core functions: precise positioning, health monitoring, and emergency calling, and is equipped with a large font screen, voice interaction, and other aging friendly designs. The 4G LTE elderly person GPS Tracker becomes a "personal guardian" for elderly people living alone, chronic disease patients, and those with cognitive impairment. Through the model of intelligent hardware and cloud services, The 4G LTE elderly person GPS Tracker constructs a multi-dimensional security network covering home, community, and hospital, which not only solves children's anxiety about elder care, but also respects the independent living needs of the elderly. The 4G LTE elderly person GPS Tracker has become a key entry point in the field of smart elderly care.