A restraint belt includes a binding unit, a binding unit, a first connecting belt and a second connecting belt.The binding unit includes a binding piece,A first fastener and a second fastener which can be connected with the first fastener.The binding unit includes a third fastener provided on the binding part and a fourth fastener which can be embedded with the third fastener.The first connecting belt comprises a first belt body and a fifth fastener which are connected between the binding unit and one of the binding parts.The second connecting belt includes a second belt body,A sixth fastener and an outer ring part arranged on the second belt body and detachably inlaid with the fifth fastener,After the sixth fastener passes through an outer hole of the outer ring part,An outer ring winding part with adjustable ring diameter and closed ring shape can be formed by the second belt body and the outer ring part.The outer circumference may be fixed to a fixed object,And can achieve the purpose of stable constraints.一種約束帶，包含一綁縛單元、一束固單元、一第一連接帶及一第二連接帶。該綁縛單元包括一綁縛件、一第一扣件及一可與該第一扣件扣接第二扣件，該束固單元包括設置於該綁縛件的一第三扣件及一可與該第三扣件互相嵌扣第四扣件，該第一連接帶包括一連接於束固單元與該綁縛件其中之一的第一帶體及一第五扣件，該第二連接帶包括一第二帶體、一設置於該第二帶體且可拆卸地與該第五扣件互相嵌扣的第六扣件及一外環圈部，該第六扣件穿過該外環圈部的一外穿孔後，可由該第二帶體與該外環圈部形成一可調整圈徑且呈封閉環圈狀的外圈繞部，該外圍繞部可固定於一固定物件上，且可達到穩固的約束目的。
