The invention discloses an integrated rail-lifting and sleeper-replacing multifunctional automatic device. The integrated rail-lifting and sleeper-replacing multifunctional automatic device is composed of a self-propelled rail vehicle, an integrated rail-lifting and sleeper-replacing multifunctional device, a charging battery group, an inverter, a hydraulic system and a control system box, whereinthe charging battery group and the inverter provide power for an oil pump and a control system, and an oil tank, the oil pump, a hydraulic control system and an automatic control system are arrangedin the hydraulic system and the control system box; a working position can be automatically and quickly aligned, a steel rail can be quickly jacked up, a sleeper is rotated, a damaged sleeper is pulled out, and a good sleeper is pushed; rail lifting and pushing-pulling of a sleeper adopt an integrated structure, the structure is simple and compact; the rail vehicle can leave a railway track automatically, and the passage of a train is prevented from being affected by the sleeper-replacing operation; the rail vehicle can return to the railway track automatically, and leave a sleeper site afterthe sleeper-replacing operation is completed; and the intelligent control is easy to realize, the operation is convenient, and the working efficiency of the sleeper-replacing is high.