Single crystals of Diglycine Sulphate monohydrate (DGSM) have been grown by slow evaporation solution growth technique. The size of the grown crystals is 20x10x10mm3 with the duration of 25 days. To identify the cell parameter, space group and planes indexing the grown crystals were subjected to single & powder XRD. The different modes of vibrations present in the crystal were identified with FT- IR spectrum. The optical transmission, absorbance, extinction coefficient, Reflectance and refractive index have been studied to find its linear properties by UV-Vis spectroscopy. Band gap energy was calculated to be 4.71 eV. The dielectric constant, dielectric loss and AC conductivity has been measured as a function of frequency and temperature.