Internal fixation plates are used to heal fractured fractures so they don't get displaced or deformed. Placement of plates to stabilize until the bone heals. The current development of internal fixation plates is made of biocomposite as a substitute for metal materials. PLA/PCL/nHA biocomposite using the cold isostatic pressing method can increase density, decrease porosity and increase bending and tensile strength. One of the main factors affecting the mechanical strength of the internal fixation plate is the sintering temperature. The sintering temperature variations used were 140, 150, and 160oC with the PLA/PCL/nHA biocomposite composition of 80/20/20 %wt. The aim is to obtain an internal fixation plate with the characteristics and mechanical properties of the femur bone. FTIR test results for a mixture of PLA, PCL, and nHA did not form chemical bonds, this is because PLA has hydrophobic properties which makes it difficult for the matrix surface to bond between materials. There are no sharp crystal peaks and broad valleys, so the crystal structure formed is amorphous, indicating that the material is easily degraded. The sintering temperature of 150oC for the PLA/PCL/nHA blends from SEM photos shows a strong interfacial bond, this can increase the density value and decrease the porosity value. These results are consistent with the results of the bending and compressive tests which experienced an increase of 63.1 N and 20.72 N/mm2.