The sol-gel auto-combustion procedure was used to synthesize copper doped cobalt nano ferrites nano ferrites. X-ray diffraction measurements validated the mono-phase formation and nanocrystalline character of the produced samples. It possesses a monophasic cubic-spinel lattice structure with an average crystallite size ranging from 24.10 nm to 43.50nm. The morphological characteristics were shown using SEM analysis, which revealed the almost spherical form of grains with sizes ranging from 24.10 nm to 43.50nm its good agreements for the TEM analysis. SEM images revealed that the nanoparticles were nearly spherical with a uniform size distribution around 20-30 nm. Nano-sized ferrites often display a larger band gap compared to their bulk counterparts due to quantum confinement effects and also shows the good microbial agents.Nano ferrites have distinct advantages over their bulk counterparts, including enhanced surface area, quantum size effects, and tunable optical properties. The influence of synthesis techniques on particle size, morphology, and cation distribution is also discussed, highlighting the critical role these factors play in determining the material's properties. This paper aims to provide a CuCoFe₂O₄ nano ferrites, focusing on their synthesis, properties, and applications.