Automatic timing spinning type tourniquet

The utility model discloses an automatic timing spinning type tourniquet which comprises a tourniquet body, the end of the tourniquet body is connected with a connecting band, the connecting band is provided with a clamping groove, the end of the connecting band is connected with a spinning rod fixing band, the spinning rod fixing band is provided with a tightening band, the tightening band is provided with a spinning rod, the spinning rod is hollow, and the top of the spinning rod is in threaded connection with a cap plug. Colored volatile substances are filled in the spinning rod, time scale marks are arranged on the spinning rod, and the end portion of the spinning rod fixing belt is connected with a clamping ring shaped like a Chinese character'ri '. The spinning rod is filled with the colored volatile matter, when hemostasis is carried out on a patient, the cap plug is pulled out, the colored volatile matter starts to volatilize, timing is carried out, blood at a wound permeates to the dressing layer thr