The sorting equipment is used in the FT test link after chip packaging. It is a back-end test equipment that provides chip screening and classification functions. The sorter is responsible for transporting the input chips to the test module according to the pick-and-place method designed by the system to complete the circuit pressure test. In this step, the sorter selects and classifies the circuits according to the test results. Sorting machines can be divided into three categories according to the system structure, namely, Gravity sorting machines, Turret sorting machines, and PickandPlace sorting machines.