The invention provides a stable dynamic linear movement generating device. The stable dynamic linear movement generating device consists of three parts including a driving module, a moving module and a supporting module; the driving module comprises a three-phase stepping motor, a motor reducer, a cable reel, a cable, a cable height guiding pulley, a cable connection pulley, a cable width guiding pulley, a tension sensor, a ball slider, a ball slider guide track, an electromagnetic lock and a photoelectrical limiting device; the moving module comprises an air floatation module, an air floatation guide track, an auxiliary equipment fixing seat, an electromagnetic lock attracting plate, an elastic rope and an elastic rope guiding pulley; and the supporting module comprises a motor platform and a guide track platform. A dynamic linear movement state generated by the device can be adjusted and set in a certain range, a movement process is stable and free of vibration, energy is recycled safely and reliably, the device is simple in structure, and can be detached, and movement and transportation are facilitated.