A self-locking bracket, an orthodontic system and an orthodontic method therefor. The self-locking bracket comprises a main body part (100), a lid body part (200) and a connection part (300), wherein the main body part (100) is provided with a surface and a bottom surface, the surface of the main body part (100) is provided with a main groove (101), the main groove (101) divides the surface of the main body part (100) into a first end part (102) and a second end part (103), the first end part (102) of the main body part (100) extrudes relative to the second end part (103), and the surface of the first end part (102) of the main body part (100) is in a smooth curved surface form the lid body part (200) is provided with a bottom surface and a surface, wherein the bottom surface of the lid body part (200) matches with the surface of the second end part (103) of the main body part (100), the surface of the lid body part (200) is in a smooth curved surface form, matches with the surface of the first end part (102) of the main body part (100) to form an ellipsoid-like shape and the main body part (100) is connected to the lid body part (200) through the connection part (300). The self-locking bracket is convenient in arch wire installation, firm in arch wire fixation and good in orthodontic effect.Linvention concerne un boîtier à verrouillage automatique, un système orthodontique et un procédé orthodontique correspondant. Le boîtier à verrouillage automatique comprend une partie de corps principal (100), une partie de corps de couvercle (200) et une partie de liaison (300), la partie de corps principal (100) comprenant une surface et une surface inférieure, la surface de la partie de corps principal (100) comprend une rainure principale (101), la rainure principale (101) divise la surface de la partie de corps principal (100) en une première partie dextrémité (102) et une seconde partie dextrémité (103), la première partie dextrémité (102) de la partie de corps principal
