The principle of the quantitative seasoning bottle is achieved through a special structure on the bottle cap. There is a rotating knob on the bottle cap, and the knob acts on the scale plate inside the bottle through leverage. There are different numbers of holes on the scale plate, and there is a mark on each hole. The mark represents the amount of seasoning corresponding to the hole. When the knob is rotated, the lever pushes the scale plate to adjust the corresponding seasoning amount.