The invention relates to an automatic salvaging device, which is characterized by comprising a stand and a connecting rod mechanism, wherein the connecting rod mechanism is connected with the stand, a motor and a net frame. The automatic salvaging device can complete the whole process of salvaging, lifting and safely taking out an object automatically only by providing power at one place. The invention aims to solve the mechanical and automatic problems of water rescue and can ensure the safety of a rescuer under the complicated and severe conditions at the same time.