The invention discloses a low-altitude searching and positioning system. The low-altitude searching and positioning system comprises a ground ejection device, an aerial reconnaissance device and a ground terminal; the ground terminal sends an ejection angle signal to the ground ejection device, the ground ejection device drives a driving motor according to received angle data, and the driving motor rotates the ground ejection device to a preset angle; the ground terminal sends an ejection confirmation signal to the ground ejection device, the ground ejection device launches the aerial reconnaissance device, the aerial reconnaissance device collects real-time synthetic data and sends the real-time synthetic data to the ground terminal, and the ground terminal receives the synthetic data, performs dynamic image composition and target object recognition and analysis and pushes target objected information. According to the low-altitude searching and positioning system, a sensor is rapidlylifted off in a short time, the target object is prevented from being influenced, and meanwhile, precise ground target positioning is realized; and the size of the aerial reconnaissance device is small, and the aerial reconnaissance device can be carried around, is convenient to recycle, can be reused for several times, and can be applied to scenes of search and rescue after an earthquake, wild animal protection, criminal investigation, flood rescue and the like.