The invention discloses an old battery recycling device. The device comprises a supporting table; a rotary table, wherein the rotary table is further provided with three inner cavities which are independent of one another and are respectively a carbon rod collecting area, a paste collecting area, a zinc cylinder and plastic skin collecting area, the carbon rod collecting area is communicated witha first round hole, the paste collecting area is communicated with a second round hole, and the zinc cylinder and plastic skin collecting area is communicated with a third round hole; four cutting knives; a motor, wherein the upper end of an output shaft of the motor coaxially passes through the rotary table and is arranged in the supporting table, and the output shaft of the motor is fixed to therotary table and can drive the rotary table to rotate around the center circumference of the rotary table; an electric push rod, wherein a non-telescopic lower end of the electric push rod verticallypasses through the supporting table and is coaxially fixed with the output shaft of the motor. The device is high in recovery efficiency, is small in environmental pollution, is capable of classifying and recovering all components of the dry battery and the like, and can be widely applied to the technical field of old battery recovery.