This creates a kind of restraint strap structural improvement, to limit user's limbs moving range, comprising: a fixing belt, one first extend band and one second extension band. The fixing belt both ends are respectively provided with a first connecting portion and a second connecting portion, which can connect the what second connecting portion to fix the fixing belt on what user limbs； And the first extension band and the second extension band one end are separately connected the what fixing belt, with having one first fastener male end, which can fasten what the first fastener female end with one first fastener female end, the first fastener male end for first extension. Thereby structure, this creation restraint strap can increase comfort in constraint and execute the convenience lightened restrictions on.本創作一種約束帶結構改良，用以限制使用者肢體移動範圍，包括：一固定帶、一第一延伸帶以及一第二延伸帶。該固定帶兩端分別具有一第一連接部以及一第二連接部，該第一連接部可連接於該第二連接部以將該固定帶固定於使用者肢體上；以及該第一延伸帶以及該第二延伸帶一端分別連接於該固定帶，該第一延伸帶具有一第一扣具公端，該第二延伸帶具有一第一扣具母端，該第一扣具公端可扣合於該第一扣具母端。藉此結構，本創作約束帶可增加約束中舒適感及執行鬆綁的方便性。
