1. Technical level certificate: The black belt certificate of Taekwondo can prove that the holder has mastered the technical and theoretical knowledge of Taekwondo.

2. Demonstrate experience and ability: Black belt certificate holders have certain experience and practical ability in Taekwondo.

3. On behalf of honor: The black belt is an honor in Taekwondo, which represents the recognition of students' efforts and efforts.

4. As qualification certificate: Taekwondo black belt certificate can also be used as qualification certificate for entering a higher level of competition and teaching.