Drainage chest tube with abnormal flow mechanism

The utility model discloses a drainage thoracic tube with a flow abnormality mechanism, which comprises a drainage tube main body and a flow sensor, a medical one-way valve is arranged in the middle of the drainage tube main body, and the flow sensor is arranged on one side of the medical one-way valve, so that when the abnormal drainage flow changes, medical personnel can be reminded to pay attention in time, manual intervention is needed, and the flow abnormality is avoided. If suddenly increased chest fluid cannot be clamped in time to cause rapid swing displacement of mediastinal septum or recruitment pulmonary edema, and drug administration needs to be carried out on a patient, the sealing cover is screwed to continuously feed liquid medicine from the drug inlet, the liquid medicine enters the duckbilled silica gel pad through the supporting ring, and the right end of the duckbilled silica gel pad stretches to carry out drug administration smoothly. When administration is not carried out, the duckbilled