Objective To study mechanical properties of two thoracic aortic bare stents (stent Ze and stent Fa), so as to provide the theoretical basis for the design and clinical selection of bare stents. Methods The finite element models and experimental models of two bare stents were constructed. Finite element analysis (FEA) on bending, radial force, simulated use of the two models were conducted. The accuracy of FEA was verified by experiment result and the vessel stress and strain after stent implantation were predicted. Results The FEA indicated that section flattening rates of stent Ze and stent Fa were 3.83% and 18.83% at 90° bending (8.57% and 14.27% in test results) and 12.02% and 23.72% at 180° bending (14.37% and 23.35% in experiment results). The maximal radial forces of stent Ze and stent Fa were 33 and 429 N/m in systolic phase (31 and 433 N/m in experiment results), and 27 and 146 N/m in diastolic phase (29 and 179 N/m in experiment results). The maximal stresses, strains, and diameter expansion rates of vessels implantation of stent Ze and stent Fa were 4 and 18 kPa, 4.17% and 13.92%, and 1.03% and 8.98%, respectively. There was no significant difference between the FEA and experiment results (P>0.05). Conclusions After implantation of stent Ze and stent Fa, the maximum stress and strain of vessels were within the allowable range. Stent Ze is suitable for curved vessel implantation with a better bending performance. Meanwhile, stent Ze has a lower radial force, and it can provide intimal support as the Petticoat stent with a lower radial force. Stent Fa has a higher radial force, and it can enhance its stability in vessels and reduce the risk of spinal ischemia, thus being suitable for restrictive bare stents.