The present invention relates to a double-link overturning platform, which comprises an overturning platform top and an overturning system driving the overturning platform top, and wherein, the overturning system is composed of a platform top pitching mechanism and a platform top turning mechanism. The platform top pitching mechanism consists of a bench, two main motors, two decelerators, two couplings, two fixed seats, four fixed hinges, two small gears, two big gears, two big gear steady bearings, two lower link hinges, two links, two upper link hinges, a coordinating rod, a coordinating rodhinge, an overturning bench connecting seat, an overturning bench and two upper bench hinges. The platform top turning mechanism consists of a platform top rotating motor, a small platform top rotating gear, a large platform top rotating gear, a rotating platform top and a main shaft. The present invention utilizes the driving of the main motors and the platform top rotating motor to realize theoverturning movement of a workpiece on the rotating platform top, the structure is simple, the platform top pitching mechanism has a force-increasing effect, the self-locking protection can be realized at an ultimate overturning position, and the present invention can realize the overturning of large-tonnage workpieces.