The cosmic optical background (COB) is an important observational quantity to study the cosmic star formation history, because it is expected to consist mainly of the integrated galaxy light (IGL). Here, we report the integrated galaxy spectra in 0.4-0.9 μm from the Galaxy And Mass Assembly (GAMA) survey, which is complete down to 20 mag. Spectrum shape of the calculated IGL is similar to the predicted IGL from recent model of galaxies down to 30 mag (Dominguez et al. 2011). No prominent spectral feature was found in the calculated IGL spectrum.