The purpose of this work is to reveal a tourniquet with automatic release function,Including: the belt style,It has a first end and a second end；A locking device,On the belt body,It can be active between a locked state and an unlocked state,And can be in the locked state for a predetermined time,Changing from the locking state to the unlocking state；Among them,When the locking device is in the locked state,The first end of the belt body is connected with the second end to form a ring shape,And at a connecting position；When the locking device is in the unlocking state,The first end and the second end of the belt body are separated from each other and are located in a separation position.本創作係揭露一種具有自動鬆綁功能之止血帶，包括：一帶體，具有一第一端及一第二端；一鎖定裝置，設於該帶體上，係可於一鎖定狀態與一解鎖狀態間活動，且可在位於該鎖定狀態下持續一預定時間後，由該鎖定狀態改變至該解鎖狀態；其中，當該鎖定裝置於鎖定狀態時，使該帶體之第一端與第二端間相互連接而形成一環狀型態，並處於一連接位置；當該鎖定裝置於解鎖狀態時，使該帶體之第一端與第二端彼此分離開來地處於一分離位置。
