Objective: The finite element model of hallux valgus foot was established to study the stress and displacement changes of the first and second rays of hallux valgus under different tensile forces. It provides theoretical support for the design of hallux valgus orthosis. Methods: Firstly, the collected CT images of the foot of the patient with hallux valgus were imported into Mimics software to reconstruct the three-dimensional skeletal model of the foot. Secondly, the 3-matic software is used to mesh the reconstructed model and generate the volume mesh. Finally, the optimized model is imported into Ansys for finite element analysis, and the relationship between the tension and the stress and displacement of the first and second rays of hallux valgus is verified by changing the size and direction of the tension. Results: When the force is less than 12 N, the displacement of the first phalanx is positively correlated with the magnitude of the applied tension. When the magnitude of the force remains unchanged and the direction of the force is changed, the stress magnitude and distribution of the first and second rays of hallux valgus change with the direction, and the displacement will also change slightly. Conclusions: The finite element analysis technology can analyze the stress and displacement changes of the first and second rays of hallux valgus under different tensions vividly and accurately, which lays a foundation for the design of hallux valgus orthosis.