Portable water-free closed thoracic drainage device

The utility model provides a portable water-free closed thoracic drainage device which comprises a shell, a top cover, an exhaust pipe, a drainage pipeline and a fixing assembly used for wearing the shell. The shell is provided with a liquid storage cavity, and an opening communicated with the liquid storage cavity is formed in the top of the shell; the top cover detachably covers the opening and is provided with a first hole and a second hole; the exhaust pipe is arranged at the first hole, and the liquid storage cavity is communicated with the outside through the exhaust pipe; the drainage pipeline penetrates through the second hole and comprises a first pipeline located outside the liquid storage cavity and a second pipeline located in the liquid storage cavity, the first pipeline is connected with the thoracic cavity cannula, a one-way valve and a one-way valve head are sequentially arranged on the second pipeline, and the one-way valve head is arranged at an outlet of the second pipeline; the pleural eff