Thoracic surgery nursing drainage device

The invention discloses a thoracic surgery nursing drainage device. The device comprises a water seal part and a drainage part. The water seal part comprises a water seal bottle I, a water seal bottleII, a liquid outlet pipe, an L-shaped liquid guide pipe, a cover body and a mini air pump. The water seal bottle II is arranged on one side of the water seal bottle I, and the bottom between the water seal bottle I and the water seal bottle II is provided with a through hole; the top of one side of the water seal bottle II, far from the water seal bottle II, is provided with the liquid outlet pipe; the L-shaped liquid guide pipe penetrates through the top of the water seal bottle II; and the bottom of the L-shaped liquid guide pipe extends to the internal bottom of the water seal bottle II. The device has a simple structure. During the drainage, hydrops will not flow back, and the drainage speed can be increased. Thereby, the problems that viscous hydrops are attached to a drainage tube to be solidified, the drai