Ultrasonic velocity ,density and viscosity have been measured for glycine in double distilled water at 303.15K,308.15K and 313.15K.Thrmodynamic parameters such as adiabatic compressibility(b), acoustic impedances(z),intermolecular free length(Lf), relative association number (RA ), relaxation amplitude(a/f2) and relaxation time(t) have been obtained from the experimental data for solutions of glycine with different concentrations and temperatures, with a view to investigate the nature of the molecular interactions. As adiabatic compressibility and intermolecular free length decreases with increase in concentrations and temperature and gradually increases with concentration of solutes. The nature of variation of these parameters with concentration and temperature has been used to understand the type and strength of interaction present in the system investigated.