The utility model relates to a binding auxiliary device, which comprises a shell, a shaft body and a belt body. The outer shell comprises a first surface, a second surface and a side wall to form a cylinder and define a holding space, and the first surface and the second surface are water drops of the same shape, with blunt ends and tips bent to one side. A feeding port is arranged at the corresponding tip of the side wall, the shaft body is pivoted on the shell and is located in the holding space, and the belt body is rolled in the holding space by the shaft body, and one end of the belt body is exposed through the feeding port.一種包紮輔助裝置，包括外殼、軸體及帶體。外殼包含第一表面、第二表面及一側壁而構成一柱體並界定出容置空間，且第一表面及第二表面為形狀相同之類水滴形，具有鈍端及向一側彎曲之尖端。其中，側壁對應尖端處設有給料口，軸體樞設於外殼且位於容置空間中，而帶體藉由軸體捲設於容置空間中，且帶體之一端經由給料口而暴露於外。
