止血带止血是用于四肢大出血急救时简单、有效的止血方法，它通过压迫血管阻断血行来达到止血目的。但如使用不当或使用时间过长，止血带可造成远端肢体缺血、坏死，造成残废，为此，只有在出血猛烈，用其它方法不能止血时才能应用止血带。

      止血带以橡皮条或橡皮管为好，不宜用布带、电线等无弹性的带子。绑扎位置应在伤口的上方(近心端)，并尽量靠近伤口，以上臂的上1/3和大腿上中部为好，小腿和前臂不能上止血带，因该处有两根骨头，血管正好走在两骨之间，上止血带起不到压迫血管的作用。上臂的中1/3部位亦不能上止血带，因它可能引起神经损伤而致手臂瘫痪。

Tourniquet hemostasis is a simple and effective method of hemostasis for emergency treatment of extremities of extremities. It achieves hemostasis by suppressing blood vessels by pressing blood vessels. But if the improper use or use for a long time, a tourniquet can result in distal limb ischemia, necrosis, causing disability, therefore, only if the bleeding, cannot stop bleeding with other approaches to apply a tourniquet. The tourniquet is made of rubber strip or rubber tube, and it is not suitable to use tape, wire and other inelastic bands.

Binding location should be above the wound (near heart side), and close to the wound, the above arm on a third for the central and on his thigh, calf tourniquet and forearms can't, because it has two bones, blood vessels just walk between the two bones, tourniquet up less than the role of pressure vessels. One third of the upper arm may not be in the tourniquet, as it may cause nerve damage and cause arm paralysis.