A kind of pigeon standing-cup for preventing from being altered, the foot ring with predetermined thickness is in appearance, at least open up a groove axially or radially, the bottom wall of groove slot bottom is allowed to form the shallow portion of a thin wall shape, and the RF device of electronic wafer can be embedded in foot ring side, and then enable the thin wall shape design in the shallow portion on foot ring, it allows the people to be practised fraud to be difficult to or can not even carry out reaming adulterium to foot ring, or the damage and fracture in shallow portion are easy to cause when altering, it enables foot ring be destroyed Hou and be not available, and then reaches better tamper evidence effect.一種防止遭變造的鴿子腳環，該具有預定厚度的腳環外表上，至少開設一軸向或徑向的溝槽，讓溝槽槽底的底壁形成一薄壁狀淺薄部，且在腳環一側可埋設有電子晶片之射頻器，進而令腳環上之淺薄部的薄壁狀設計，讓欲作弊的人難以或甚至無法對腳環進行擴孔變造，亦或在變造時容易導致淺薄部的損壞與斷裂，令腳環被破壞後而無法使用，進而達到更好的防弊效果。
