A detachable double structure necktie suggested in the present invention comprises a first necktie member and a second necktie member. The first necktie member comprises: a first large sword-shaped part shown on the front side; a first middle sword-shaped part, which is connected to the first large sword-shaped part and is hung around a user's neck; and a first connection part provided at an end of the first middle sword-shaped part. The second necktie member comprises: a second large sword-shaped part draped in the front side; a second middle sword-shaped part; and a second connection part which is provided at the second middle sword-shaped part and is attached to and detached from the first connection part. Accordingly, the necktie can be implemented to have two to four designs according to knotting methods, and thus can be implemented in various styles.