Negative pressure sputum suction device with reminding function

The utility model discloses a negative pressure sputum suction device with a reminding function, which comprises a shell, an aspirator, a timer, a pressure gauge and an alarm are arranged in the shell, a connector is connected with the aspirator, the alarm is electrically connected with the pressure gauge, an adjusting knob and a connecting pipe are arranged on the shell, and the adjusting knob is used for adjusting air pressure. A drainage barrel is arranged at one end of the connecting pipe, a groove used for containing the drainage barrel is formed in the shell, a sputum suction pipe is arranged on the drainage barrel, one end of the sputum suction pipe is detachably connected with the drainage barrel, the alarm detects the pressure value in the drainage barrel in real time, and when the pressure value exceeds a certain value, an alarm is given out for reminding, and the aspirator is controlled to stop working. The timer can be adjusted to countdown for half an hour or one hour, the situation that medical