Metal bone plates have been increasingly used as a protection against fracture developed in natural bones in orthopedic surgical treatment for years. The stiffness difference existing between the metal plates and natural bone leads to osteoporosis, and, thus the second risk of fracture in the areas surrounded by the plate. In addition, the wear and corrosion of metal plates are accompanied with the release of undesirable corrosion debris within the body. To address the said issues, ceramic polymer degradable composites can be designed and utilized. This research aimed at fabricating degradable bone plates of Polycaprolactone (PCL)/ Baghdadite (Ca 3 ZrSi 2 O 9 ) to stabilize and restore the bone tissue damages. PCL is a semi-crystalline polymer exhibiting a high level of biocompatibility when used in the body. However, PCL has proved to have a lower rate of degradation compared to other biocompatible polymers whilst showing higher fracture energy required. Baghdadite is a bioceramic with high bioactivity properties, and therefore, the additions of baghdadite nanoparticles to PCL results in increased bioactivity of PCL, and, consequently, improved degradation rate of composites. In this study, baghdadite powder was prepared by the sol-gel method and ball miling process. XRD pattern of powder verified the synthesis of pure baghdadite powder with a nano-scale size of 25 nm. Bio- nanocomposite films were fabricated by the addition of 0, 5, 10, 15, 20, 25 and 30 wt% of nano-powder into PCL dissolved in chloroform followed by the casting method. The results of the thermal analysis showed that the addition of 20% wt baghdadite nanoparticles has increased the melting point of films from 59 °C for pure polycaprolactone to 63 °C, due to the proper interaction and compatibility of baghdadite with the polymer phase. Mechanical properties were improved by the addition of baghdadite nanoparticles. By addition 20 wt% baghdadite in PCL film, ultimate tensile strength enhanced from 16 ± 0.5 MPa to 21 ± 0.4 MPa, strain at break varied from 382 ± 15 % to 375 ± 4.0 % and tensile modulus enhanced from 300 ± 15 MPa to 420 ± 20 MPa that PCL- 20 wt% baghdadite selected as optimized film. The immersion test in a simulated body fluid (SBF) was carried out to evaluate the bioactivity of samples. The SEM images of films exposed to the simulated solution of the body showed and confirmed the formation of apatite layer on the composite surfaces and that the growth rate of Baghdadis on the specimens increases with addition of fillers. In order to assess biodegradability, samples placed in phosphate buffered saline () solution. The results indicated that addition of baghdadite increases the degradation rate of the samples. Furthermore, empirical models were proposed to predict the modulus of polymer-particle composites. In order to compare the results obtained from theoretical models and experimental tests and also to predict the mechanical properties of the composite, the simulation finite element analysis was utilized using the Abaqus software (6.14). The results showed that the Counto model predictions best match the mechanical properties of the composite. Based on results, baghdadite- polycaprolactone film with controllable process of fabrication, mechanical and biological properties can be a suitable selection for repairing bone defects. Keywords: nanocomposite, film, baghdadite, polycaprolctone, biomaterials, in vitro, echanical properties, Performance evaluation criteria, bone tissue engineering