A bionic elastic fixing device relates to orthopedic medical devices, and is used to implement bionic elastic internal fixing for joint dislocation. The device consists of an elastic component (1) and a fixing assembly (2, 3, 4). The elastic component (1) may be multiple strip-shaped elastic mesh pieces, and has the assembly direction being the same as the ligament fibers at the joint required to be fixed. The elastic modulus of the elastic component (1) matches the elastic modulus of the ligament fibers at the joint required to be fixed. Two ends of the elastic component (1) are fixedly connected to the dislocated joint by the fixing assembly (2, 3, 4). The elastic component (1) has the same shape as the ligament fibers at the joint required to be fixed. The elastic fixing device simulates the ligament tissue at the dislocated joint to implement elastic fixing on the dislocated joint, so that the fixed dislocated joint can move slightly according to the biological characteristics of the original joint, so as to maximally simulate the physiological state of the joint, thereby achieving the optimal treatment effect. The present invention also has such advantages as quick post-surgery recovery, the low recurrence rate of dislocation, and desirable functional recovery of the body part of the patient where dislocation occurs.Linvention concerne un dispositif de fixation élastique bionique associé à des dispositifs médicaux orthopédiques, qui est utilisé pour mettre en œuvre une fixation interne élastique bionique pour une luxation darticulation. Le dispositif comprend un élément élastique (1) et un ensemble de fixation (2, 3, 4). Lélément élastique (1) peut être de multiples pièces à mailles élastiques en forme de bande, et sa direction dassemblage est identique à celle des fibres de ligament au niveau de larticulation à fixer. Le module délasticité de lélément élastique (1) correspond au module délasticité des fibres de ligament au niveau de larticulation à fixer. Deux