Anti-loss key chain

The utility model discloses an anti-loss key chain, which relates to the technical field of key chains and comprises a connecting piece, a key ring is arranged in the connecting piece, one end of the key ring far away from the connecting piece is fixedly connected with a connecting column, and a key chain component is arranged on the outer side of the key ring. The key ring is provided with the connecting piece, the key ring body, the connecting column, the locking sleeve and the key chain assembly, the key ring body is designed to be of a two-arc-shaped structure, meanwhile, the two key ring bodies are locked and fixed through the locking sleeve and the external threads, a key and the key chain can be installed on the key ring body at any time, and meanwhile a rapid pulling and inserting structure is arranged in the key chain. A space capable of storing articles is additionally arranged in the key chain, access control cards with small sizes can be stored in the key chain, the opening of the key chain is fix