We observed molecular dynamics of Dipalmitoyl Phosphatidylcholine liposome water dispersion by dielectric spectroscopy measurement. Statistical analysis of jitter used in the present paper is a new technique developed to observe dielectric behaviors more precisely in higher frequency range from 1 GHz to 30 GHz for time domain reflectometry method. Though the relaxation time obtained shows common temperature dependence, the relaxation time distribution parameter β decreased around the gel-liquid crystalline phase transition temperature with increasing temperature from 36 ℃ to 48 ℃. It is suggested that surrounding water of lipid membrane may form the particular water structure in the LC phase different from bulky water in the gel phase with a change in the mobility for hydrophobic regions of the lipid bilayer.