There is uncertainty regarding the influence of porous segment location on the stress distribution of the simplant and surrounding bone. This study evaluated the biomechanical behaviors of cylindrical implants with different position arrangements of the porous segment. Five types implants (Φ 4.0 mm × 13 mm) modes were built according to the position arrangement of the porous segment on the implant: (1) PIN (close to the implant neck), (2) PIM (in the middle of the implant), (3) PIB (near the implant bottom), (4) PIT (distributed throughout the implant), (5) SI (non-porous design). Five single implant-supported restoration models were established for finite element analysis (FEA). Oblique and axial load of 300 N were respectively applied to the zirconia crown to simulate the bite force. Each group’s equivalent stress and simulated stiffness values were calculated and compared. The results indicated that the minimum peak stress value of implant and bone tissue appeared in PIM group and PIT group, respectively. The implant stiffness of PIT group was the lowest, almost close to that of bone tissue. The optimal stress distribution was obtained when the porous segment was arranged in the middle position. After increasing the height of the porous segment, the stiffness value of the implant is closest to the bone tissue, while the maximum stress of the surrounding bone is reduced to the lowest level.