The invention discloses a breathing valve capable of being used by being matched with vacuum feeding. The breathing valve comprises a filter, a conical pipe, a feeding hopper, a discharging pipe, a flap valve mechanism and an air delivering pipe. One side of the filter is provided with a valve. The large diameter end of the conical pipe is connected with the discharging pipe. One end of the feeding hopper communicates with the interior of the discharging pipe. The flap valve mechanism comprises a connecting pipe and a pipe cover. One end of the connecting pipe is connected with the valve. Theother end of the connecting pipe extends from the small diameter end of the conical pipe into the interior of the conical pipe. The pipe cover is hinged to the end of the connecting pipe extending into the interior of the conical pipe. The side, away from the valve, of the pipe cover is provided with the air delivering pipe. The air delivering pipe is arranged in the discharging pipe in the lengthdirection of the discharging pipe. According to the breathing valve capable of being used by being matched with vacuum feeding, the structure is simple, and design is reasonable; and it can be ensured that during material transporting, the filter is not blocked, the production efficiency is improved, and the production cost is saved.