In this study the optical and color properties of light emitting polymers have been studied. Light-emitting polymers is a polymer that emit light when a voltage is applied to it. Recent advances in the field of light emitting polymers has been the discovery of conjugated polymers, that is, kind of fluorescent polymers that emit light when excited by the flow of an electric current. In the process of fluorescence, electron of poly fluorescent material which in normal conditions are in basic energy balance, taking energy from a given source energy and energy levels are raised. The return of the electron from the excited state to the ground state , the excitation energy is released as light. The purpose of this research is to produce polymer nanofibers that can emit light in the blue region. In order to achieve this goal, compound the polymer methyl methacrylate polymer with different ratios of fluorescence emitted light in the blue region, it is completely dissolved in the mixture solvent of tetra hydro furan and the dimethyl formamide and electrospun in optimum condition. Then the fibers were performed testes spectrophotometer, spectral reflectance, infrared spectroscopy and scanning electron microscopy, then were compared the results. These results indicate that increasing percentof polymer fluorescence raised the sample size, its due to rod and rigid structure. with increasing the amount of fluorescence light emitter blue in combination light in the presence of uv light and the absence of uv light in the blue region increases. Results of infrared spectroscopy is the fact that no reaction between poly methyl methacrylate and light-emitting polymer. Keywords : light-emitting polymers, electrospinning, spectral reflectance, scanning electron microscopy, infrared spectroscopy.