In this study, a novel silicon, silver, fluorine co-modified hydroxyapatite (Si-Ag-F-HA) nano-biofilms was deposited on CP-Ti through electrodeposition. Ag was incorporated into HA coating to improve the antimicrobial properties. Si was added as a second binary element to offset the potential cytotoxicity of Ag. The as-prepared coatings were examined by scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) tests. Results highlight that F-, Si4+ and Ag+ could be evenly incorporated into the Si-Ag-F-HA coating. The results indicate that the Si-Ag-F-HA coatings take the morphology of nanoscale- villous-like, the composite coating becomes more compact. The composite coatings were found to be bioactive, based on the promotion of additional apatite onto the Si-Ag-F-HA coating surface from SBF. Potentiodynamic polarisation tests revealed that the corrosion resistance increased after Si-Ag-F-HA coating. The release of Si and Ag ions from Si-Ag-F-HA coatings shows sustained release kinetics without burst release, which reached a near steady state afterwards, thereby revealing long-term sustainable release. FTIR and ICP-MS provide a rapid and effective method for the development of new antibacterial hard tissue repair materials.