The invention relates to a full-automatic lifting platform for dispensing and a control method thereof. The control method comprises the following steps: 1) firstly, adjusting the height of a liftingtable plate to a position capable of capturing the clearest image; 2) automatically measuring the thickness of a workpiece through a digital display laser ranging sensor; 3) judging the height of thelifting table plate required to be lifted by a computer according to the data measured by the digital display laser ranging sensor; and 4) driving a turbine reducer by controlling a servo motor, and then driving a lifting screw rod to realize automatic lifting of the lifting table plate. The full-automatic lifting platform has the beneficial effects that the digital display laser ranging sensor isarranged, so that the thickness of the workpiece can be directly measured; the servo motor, the turbine reducer and the lifting screw rod are further arranged, and automatic lifting of the lifting table plate is realized through the servo motor, so that the focal distance between the workpiece and a camera lens is kept unchanged, and the distance between a dispensing head and the surface of the workpiece is fixed during dispensing; and the accuracy and operability of the lifting working platform are improved, and the production is more efficient.