Auxiliary device and method capable of automatically adjusting pneumothorax drainage speed

The invention discloses an auxiliary device capable of automatically adjusting pneumothorax drainage speed, which comprises a three-way quick connector, a PID (Proportion Integration Differentiation) controller, a pressure measuring bin, a power supply module and a vacuum pump, a pressure sensor is arranged in the pressure measuring bin, one end of the three-way quick connector is connected with a pneumothorax device, the three-way quick connector is fixed on a first hose, and the other end of the three-way quick connector is connected with a second hose. An air inlet of the vacuum pump is connected with the pressure measuring bin through a second hose, the power supply module is electrically connected with the PID controller through an FPC, and the PID controller is electrically connected with the vacuum pump and the pressure sensor. According to the pressure condition in the thoracic cavity of a patient, the pneumothorax device can be combined for automatically adjusting the exhaust speed, and the situation