Self-exhausting drip chamber

The invention discloses a self-exhausting drip chamber. The self-exhausting drip chamber comprises a drip chamber body, wherein a drip chamber upper cover is arranged on the top of the drip chamber body, and an upper drip tube and a liquid medicine injection tube are arranged on the drip chamber upper cover. The liquid medicine injection tube is provided with a detachable latex cap. A mounting tube extends outwards in the radial direction from the sidewall of the drip chamber body, and is located at a position three fifths of the total length of the drip chamber body from the bottom. A gas guide tube is arranged in the mounting tube, the gas guide tube comprises a body shaped like the Chinese character "tu", the body is provided with a gas inlet and a gas outlet, the gas inlet communicates with the gas outlet, and the gas inlet is larger than the gas outlet. An air filtering membrane is arranged in the gas inlet, and the air filtering membrane is located at the boundary between the gas inlet and the drip cham