The invention discloses a cargo stacking anti-toppling device for a ship storage bin. The device comprises a fixing frame and a second conveying wheel, a mounting frame is welded to the left side of the fixing frame. A connecting plate is fixedly mounted on the inner side of the middle part of the mounting frame; first conveying wheels are connected to the inner sides of the upper end and the lower end of the mounting frame through bearings. And a first conveying belt is connected to the outer side of the first conveying wheel in an attached mode, a containing plate is fixed to the outer sideof the first conveying belt through bolts, an adjusting rod penetrates through the interior of the containing plate, an adjusting plate is welded to the upper end of the adjusting rod, and a sliding block is connected to the outer side of the upper portion of the adjusting rod. According to the cargo stacking anti-toppling device for the ship storage bin, the screw rod is rotated to drive the connecting rod in threaded connection with the outer side to move; the connecting rods drive the fixing rods to move, so that the locking plates mounted on the rear sides of the fixing rods are attached to the goods at the corresponding positions to extrude and lock the goods, the phenomenon that the goods topple over and fall off in the advancing process of a ship is avoided, and the use safety of the device is improved.