Foam spray cover with open channel

The invention discloses a foam spray cover with an open channel. The foam spray cover comprises a cover body in which a press head is arranged. The foam spray cover is characterized in that the press head comprises a press seat in which a liquid inlet channel is arranged, the press head seat is internally provided with a liquid injection channel communicated with the liquid inlet channel, the front end of the press head seat is provided with an open nozzle of which the inner diameter is greater than that of the liquid injection channel, and the open nozzle is communicated with the liquid injection channel. Aiming to overcome the defects in the prior art, the foam spray cover with the open channel is simple in structure and can enable contents sprayed by a spraying tank to generate foams.