Provided is a taking and placing mechanism of a chip sorting bin. The taking and placing mechanism arranged on one side of the chip sorting bin comprises a moving mechanism, wherein the moving mechanism moves in the X, Y and Z directions. The taking and placing mechanism is characterized by further comprising a clamping claw mechanism and a clamping claw driving device, wherein the clamping claw mechanism is used for clamping a chip classifying plate or a chip storage plate, the clamping claw driving device controls the clamping claw mechanism to move vertically, the clamping claw mechanism is connected with a Y-shaft base which is movably arranged on a Y-shaft guide rail, and a Y-shaft driving device drives the Y-shaft base to do reciprocating movement along the Y-shaft guide rail. The taking and placing mechanism is placed on one side of the chip sorting bin, by means of movement of the taking and placing mechanism in the X, Y and Z directions, the chip classifying plate or the chip placing plate is taken from and placed on a chip clamping cartridge or a chip storage cartridge, the structure is simple, and work efficiency is high.