Novel saliva suction tube capable of protecting intraoral soft tissue

The utility model discloses a novel saliva suction tube capable of protecting intraoral soft tissue in the technical field of medical instruments, the novel saliva suction tube comprises a negative pressure tube, a grab handle and a flexible plate made of rubber, the grab handle is detachably connected with the negative pressure tube, an air passage is arranged in the grab handle, the air passage is coaxial with a central shaft of the grab handle, the length of the air passage is the same as that of the grab handle, and the air passage is communicated with the negative pressure tube; the flexible plate comprises a connecting end and a liquid suction end, the connecting end is connected with the grab handle, a plurality of liquid suction holes are formed in the flexible plate, a liquid inlet of each liquid suction hole is located in the liquid suction end and is communicated with the outside, and a liquid outlet of each liquid suction hole extends to the grab handle and is communicated with the air channel; me