Optical absorption studies have been carried out from the UV to NIR for Ho3+ions (0.1 M%) mixed organic acids namely anthrolinic, benzoic, salicylic and pthalic acids. Spectral intensities of various observed bands of Ho3+have neen affected very significantly depending upon the surrounding environment. We made a correlation between the intensity parameters and the spectral intensities quite clearly by the application of Judd-Ofelt theory. Of the various levels recorded, particularly the energy level5G6←5I8has shown a distinctive phenomenon in its intensity magnitudes as a function of the host. We have also examined the bonding nature of the complexes, as ionic for Ho3+in four different fluorescing organic acids.