Children's device of wandering away is prevented to wearable hidden relates to one kind and prevents children's device of wandering away. The utility model relates to a solve and present to prevent the missing device of children because problem disguised poor, easy and that children separate. It is as an organic whole that the trick lock locking is passed through to the one end of a nonrust steel pipe and the one end of two numbers nonrust steel pipes, and form the ring of opening length for the fifth circular arc, the diameter of ring is between 15cm to 20cm, the ring is buried underground in the collarband of shirt, the positive of a controller passes through the wire and is connected with metal spring, the power negative pole and the one end of resistance of a controller are connected, the other end of resistance passes through the wire and is connected with the metal button, metal spring builds in on one of them button hole of shirt, the metal button is corresponding with this button hole. The utility model is suitable for a children prevent turning, preventing the occasion of wandering away.