A turnover apparatus for turning over a workpiece includes a first support frame, a second support frame, and a workpiece turnover mechanism. The workpiece turnover mechanism includes a lifting assembly and a turnover assembly. The lifting assembly includes a first driving element, a movable gripper driven by the first driving element, and a suction cup positioned on the movable gripper. The turnover assembly includes a first rotating driver, a clamp connected to the first rotating driver, and a first clamp driver. The first rotating driver is capable of rotating the first clamp driver and the clamp. The first clamp driver is capable of driving the clamp to clamp or release from the workpiece.