The star-wheel stacker is specially used for the sorting and stacking work of biscuits after cooling. It ensures that the biscuits are in a neat stacking state before entering the next process (such as packaging), which facilitates manual transfer. This star-wheel stacker adopts a unique star wheel structure. Through the precise rotation and cooperative coordination of multiple star wheels, it can efficiently change postures of the biscuits from lying flat to stacked and standing within a short distance, greatly saving space. In addition, due to its special design, the star-wheel stacker can flexibly adapt to the production needs of biscuits of various specifications and shapes, which is commonly used to arrange biscuits.