Super-Eddington accretion in Active Galactic Nuclei (AGN) plays a key role in understanding rapid growth of supermassive black holes (SMBHs), particularly in the early Universe. However, the accretion disc properties, and the interplay between the accretion disc and X-ray corona are still poorly understood, especially in the super-Eddington regime. Studying spectral energy distribution (SED) of local Universe AGN in this rapid phase of SMBH growth can provide important constraints on changes in the accretion mode. Theoretical models predict that the disc emissivity changes dramatically in this stage, and thus significantly affecting the appearance of the SED. Forthe first time, we obtain the SEDs of a well-defined sample of super-Eddington accreting AGN in the local Universe via light decomposition between the AGN and host galaxy with the new GAL FITS tool, a powerful updated version of GALFIT. My work uses various disc models to fit the simultaneous optical-to-X-ray SEDs of local super-Eddington AGN to provide better constraints on the accretion mode and disc structure in the most rapid phase of the SMBH growth. By de riving fundamental AGN properties such as the X-ray bolometric corrections and optical-to-X-ray spectral indices I also compare to a sample of local sub-Eddington AGN matched in black hole mass.