Foam liquid mixing box

The invention discloses a foam liquid mixing box which comprises a box body which is arranged in an opening manner and is internally provided with a cavity, and a stirring impeller is mounted in the cavity; the defoaming liquid permeating body is made of a water absorbing material, is positioned above the stirring impeller and is provided with a lower contact plane, and the area of the lower contact plane is matched with the area of the opening of the box body; the defoaming liquid injection port is positioned above the defoaming liquid penetrating body and is used for providing defoaming liquid; when the defoaming device is used, foam liquid and a bubble layer located above the foam liquid are formed in the cavity after being stirred by the stirring impeller, the lower contact plane is in contact with the bubble layer, and the defoaming liquid penetrating body is in a defoaming liquid infiltration state, so that the defoaming liquid is attached to the lower contact plane and does not drop into the foam liqui