止血帶止血是用于四肢大出血急救時簡單、有效的止血方法，它通過壓迫血管阻斷血行來達到止血目的。但如使用不當或使用時間過長，止血帶可造成遠端肢體缺血、壞死，造成殘廢，為此，只有在出血猛烈，用其它方法不能止血時才能應用止血帶。

      止血帶以橡皮條或橡皮管為好，不宜用布帶、電線等無彈性的帶子。綁扎位置應在傷口的上方(近心端)，并盡量靠近傷口，以上臂的上1/3和大腿上中部為好，小腿和前臂不能上止血帶，因該處有兩根骨頭，血管正好走在兩骨之間，上止血帶起不到壓迫血管的作用。上臂的中1/3部位亦不能上止血帶，因它可能引起神經損傷而致手臂癱瘓。

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.