Method and device for calibrating measuring precision of essence/spice adding system

The invention discloses a method and a device for calibrating measuring precision of an essence/spice adding system. The method comprises: pre-filling the essence/spice material liquid into a delivery pipe of the essence/spice adding system; when the delivery pipe of the essence/spice adding system is full of the essence/spice material liquid, opening a sampling valve arranged in the delivery pipe of the essence/spice adding system to allow the liquid to flow out of the sampling valve; and acquiring the actual total flow Pi of the material liquid flowing from the sampling valve so as to calibrate the flow meter of the essence/spice adding system according to the relationship between the calculated flow Pc, which is calculated by the flow meter of the delivery pipe, of the material flow that flows out of the sampling valve and the actual total flow Pi. According to the embodiment of the invention, the dismounting of the flow meter from the delivery pipe of the essence/spice adding system causing the damage to