The invention discloses a full-automatic feeding and discharging device for a engraving and milling machine. The full-automatic feeding and discharging device equipment comprises a manipulator device and a storage bin device. The manipulator device comprises a fixed portal fixing frame which comprises a left stand column, a right stand column and a cross beam mounted at the top ends of the left stand column and the right stand column. A transverse guide rail, which is arranged in the transverse direction, is fixedly mounted on the cross beam. A transverse sliding seat, which can slide in the transverse direction, is arranged on the transverse guide rail. A transverse driving mechanism, which drives the transverse sliding seat, is mounted at one end of the transverse guide rail. A longitudinal sliding seat, which can slide in the longitudinal direction, is arranged on the transverse sliding seat. The storage bin device comprises a machine table. A Y-axis sliding plate, which can slide in the Y-axis direction, is arranged on the machine table, and is driven by a Y-axis motor mounted on the machine table. Multiple groups of discharging and clamping units, which are parallely arranged at an equal interval, are mounted on the Y-axis sliding plate. The full-automatic feeding and discharging device is suitable for the engraving and milling machine is particularly suitable for machining mobile phone glass, and can realize full-automatic and accurate feeding and discharging, manpower is not required, the labor cost is reduced greatly, and besides, compared with a general manipulator, the full-automatic feeding and discharging device is more stable in structure, and more accurate in positioning.